Abstract: Provided are a flat panel display device including a protection board configured to prevent damage of a display panel from external impact, and a method of fabricating the same. The display panel and the protection board are closely attached, and distortion of an image displayed on the display panel due to a space between the display panel and the protection board can be prevented. The flat panel display device includes a display panel including a lower substrate, an upper substrate and at least one light emitting element disposed between the lower and upper substrates, a protection board disposed on the display panel, and an adhesive layer disposed between the display panel and the protection board.

Abstract: A safety control structure for heater wire comprises a switch, a first heating wire, a second heating wire, and an over-current protection element, which are sequentially connected in series connection. An insulation and fusible layer is interposed between the first heating wire and the second heating wire. Accordingly, under normal condition, the switch is triggered by triggering the circuit, so as to have the first heating wire and the second heating wire then be heated up within a preset temperature range. When the first heating wire and the second heating wire produce exceptionally high temperatures to fuse the insulation and fusible layer, the current is increased instantaneously because the first heating wire and the second heating wire are short-circuited. Therefore, the circuit is interrupted by the over-current protection element to show a broken circuit status in order to stop heating up.

Abstract: A protective circuit module for a secondary battery. The protective circuit module includes a circuit board. At least one protection control circuit element for preventing overcharge and over-discharge of the secondary battery is mounted on the circuit board. A first conductive pad is coupled to the circuit board. A positive temperature coefficient device is between the at least one protection control circuit and the first conductive pad such that when a secondary battery temperature reaches a threshold value, resistance of the positive temperature coefficient device is increased and battery current is reduced.

Abstract: The present disclosure presents an electronic device includes:an electronic element with a first electrode and a second electrode disposed on the opposite sides thereof; a first terminal and a second terminal; a first support mounted to and electrically connected with the first terminal, the first support comprising a first contact part contacting and electrically connected with the first electrode; a second support mounted to and electrically connected with the second terminal, the second support comprising a second contact part contacting and electrically connected with the second electrode; a third elastic support comprising a third contact part contacting with one of the first electrode and the second electrode, wherein the third elastic support is provided so as to push the electronic element out of contact with one of the first support and the second support when the electronic element breaks in a failure state.

Abstract: A thermal protection circuit to protect an electronic device from over-heat comprises a temperature sensor, a hysteresis comparator and a switch circuit. The temperature sensor senses internal temperature of the electronic device and output an internal temperature signal with voltage. The hysteresis comparator outputs a power-off signal when the voltage of the internal temperature signal is lower than a low voltage threshold representing an a determined temperature, or outputs a power-on signal when the voltage of the internal temperature signal is higher than a high voltage threshold representing a restarting temperature. The switch circuit stops transmitting power signals to the electronic device in response to the power-off signal, or continues to transmit the power signals to the electronic device in response to the power-on signal.

Abstract: Apparatus for detecting an overheating condition at an electrical power device and automatically breaking the circuit when the temperature exceeds a setpoint value. In various configurations the device is a receptacle adapted to be used in a wall mounted box or a receptacle unit that is plugged into an existing receptacle. A temperature sensor is wired parallel to a normally open test switch on a ground fault circuit interrupter or other circuit interrupting device. The temperature switch is responsive to the temperature local to the receptacle, such as is caused by poor connections to or in the receptacle or a near-overload condition. The temperature setpoint is less than the melting temperature of the insulation of the electrical wiring. The temperature sensor is a thermistor with a negative temperature coefficient that allows current to flow thereby latching the interrupting device in a tripped position until the device is reset for reuse.

Abstract: A three-phase electric motor of a compressor receives first, second, and third phases from a three-phase power supply. A method for protecting the motor includes, using a line break protector, disconnecting the motor from only the first phase in response to a temperature being greater than a predetermined temperature threshold. The method also includes measuring a first current flowing through the line break protector, and determining a current value based on the first current independent of current in the second and third phases. The method further includes disconnecting the motor from the first, second, and third phases in response to the current value being less than or equal to a predetermined threshold.

Abstract: An over-current protection device includes a first conductive member, a second conductive member, a resistive device and a temperature sensing switch. The first conductive member includes a first electrode foil and a second electrode foil those are formed on a same plane. The resistive device is laminated between the first conductive member and the second conductive member and exhibits positive temperature coefficient or negative temperature coefficient behavior. The temperature sensing switch can switch the first electrode foil and the second electrode foil between electrically conductive status and current-restriction status, e.g., open circuit, according to temperature variation. The threshold temperature of the temperature sensing switch is lower than the trip temperature of the resistive device.

Abstract: A current measurement apparatus includes a shunt resistor (1) located between two terminal members (5, 6), each connected electrically to a respective end (4, 3) of the shunt resistor, and each extending over substantially the whole of an adjacent side face of the shunt resistor. Electrically insulating, thermally conductive material (8, 9) is provided between each side face of the shunt resistor (1) and the terminal members (5, 6), and serves to provide a thermal path for heat exchange between the shunt resistor and the terminals. The shunt resistor (1) is engineered to have the desired electrical properties, and the terminal members are connected by mechanical fasteners (13, 14) to ensure the required electrical properties without calibration. Measuring circuitry (15) is incorporated between the shunt resistor (1) and terminal members (5, 6).

Abstract: A power safety system (PSS) includes a plurality of thermally-triggered electrical breaking arrangements (TTEBAs). The plurality of TTEBAs are associated with a plurality of electrical devices (EDs) disposed external to the PSS. The PSS further includes a plurality of electrical power connections (EPCs) associated with said plurality of TTEBAs that are configured to respectively electrically connect the PSS to the plurality of EDs. When at least one TTEBA in the plurality of TTEBAs is electrically operative and at least one thermal event occurs that is sufficient to thermally activate the at least one electrically operative TTEBA, at least the EPC associated with the at least one thermally activated TTEBA is electrically broken. A method to protect a human operator of the PSS from a thermal event is also presented. A PSS also extends to a primary and a secondary electrical charging system used to charge a battery of a vehicle.

Abstract: A fan speed control circuit for controlling the rotation speed of a fan motor unit. The speed control circuit includes a resistor, a voltage stabilizing unit, a transistor and a thermal resistor. The resistor is connected to a power source of the fan motor unit, the voltage stabilizing unit is connected between the resistor and ground. The collector of the transistor is connected to the fan motor unit, the base is connected to a node between the resistor and the voltage stabilizing unit. The thermal resistor is connected between an emitter of the transistor and ground.

Abstract: An improved programmable logic control device for monitoring the current of a circuit and for signalling a circuit control device, the programmable logic control device including electrical power circuitry for activating the circuit control device and electrical circuitry for monitoring the current in the electrical circuit, the electrical circuitry including: adjustable electrical signal input circuitry to monitor the electrical current in the circuit; adjustable pick-up circuitry for adjusting the level of the current monitored in the electrical circuit, the pick-up circuitry having a thermister means for improved stabilization; adjustable time circuitry to command the electrical power circuitry to activate the circuit control device when the electrical current in the electrical circuit reaches the selected level and time duration, the time circuitry having an increased time duration to minimize nuisance tripping; and a zener diode in reverse mode for controlling the level of voltage applied to the adjustab

Abstract: An overheating protection circuit for an electronic device includes a detection circuit, a switch element, and a control element. The detection circuit is positioned adjacent to an integrated circuit (IC) peripheral circuit of the electronic device and detects a temperature of the IC peripheral circuit. The switch element is electrically connected to the detection circuit, and the control element is electrically connected to the switch element and a heat dissipation device of the electronic device. The detection circuit generates a detection signal to turn on the switch element in response to detecting that a temperature of the IC peripheral circuit increases, and the control element controls the heat dissipation device to dissipate heat generated by the IC peripheral circuit in response to detecting that the switch element is turned on.

Abstract: An apparatus for controlling a volume of an audio signal and method thereof are disclosed, by which a volume of an input signal can be controlled by using a non-linear gain curve and a target volume of the input signal. The present invention includes receiving an input signal and reference information controlling a volume of the input signal; and adjusting a volume of the input signal with the reference information, wherein the reference information comprises at least one of metadata indicating characteristics of the input signal, output environment information indicating characteristics of an environment in proximity to the apparatus and stored reference information being transmitted from memory. Therefore, the present invention is able to control a volume of an input signal adaptively by using reference information, for example metadata, outside environment information and stored reference information.

Abstract: An overvoltage protecting unit and an overcurrent protecting unit protect a power device from an overvoltage and an overcurrent using a comparator having hysteresis. An overtemperature protecting unit protects the power device from an overtemperature using a thermistor having a resistance that changes as a temperature of the thermistor changes.

Abstract: A thermistor device configures part of an electrical path from a motor feeder section to an armature. A recess defining wall defines an accommodating recess, which accommodates the thermistor device. The thermistor device includes a plate-like thermistor element. A first conductive plate and a second conductive plate sandwich the thermistor element. A pair of first projections 22b are provided at the distal end of the first conductive plate in the insertion direction. A pair of second projections 23b are provided at the distal end of the second conductive plate in the insertion direction. The first projections and the second projections abut against the recess bottom wall in a range that corresponds to the thermistor device except the thermistor element.

Abstract: A light-emitting diode (LED) bulb has an LED within a shell. The LED bulb also includes a driver circuit for providing current to the LED. The drive circuit has a thermal protection circuit, which includes a thermistor having a positive thermal coefficient and a switching temperature. The driver circuit also includes a switch-mode power supply (SMPS) controller with an input pin and an output pin. The thermistor is connected to the input pin. When the thermistor temperature is above the switching temperature, the thermal protection circuit causes the SMPS controller to produce a signal with a second duty cycle on the output pin. When the thermistor temperature is below the switching temperature, the thermal protection circuit causes the SMPS controller to produce a signal with a first duty cycle on the output pin. The second duty cycle is higher than the first duty cycle.

Abstract: A protective device is disclosed for combination with an electrical switching device including a main current line or for integration in such a switching device. In at least one embodiment, the protective device includes a switching element and a switching apparatus, which is provided for the actuation of the switching element and is influenced by a current flow through the main current line. In at least one embodiment, in order to influence the switching apparatus, a current transformer is integrated in the main current line and an electrical resistance of a secondary winding surrounded by the current transformer can be measured. A method for operating a protective device is also disclosed wherein the switching apparatus is triggered so as to actuate the switching element if the measured resistance reaches or exceeds a predetermined or predeterminable threshold value.

Abstract: The present invention provides an overheat protection device which is capable of effectively preventing a secondary battery from overheating. In the overheat protection device (20), a variable resistive element(s) (11) of which resistance varies depending on a temperature is located on and thermally combined with a certain position(s) of an electrical system (1), and a switching element (15) for controlling a current depending on an applied voltage thereto is arranged so as to control the current flowing through the electrical system (1). When the certain position of the electrical system (1) comes to be under a high temperature condition, the variable resistive element (11) interrupts the current flowing through the electrical system (1) by changing the applied voltage to the switching element (15).

Abstract: A thermistor device includes include supports, contacts and offset posts configured to assist the fracturing of failed thermistor “pills” and to distribute the fragments of the fractured pills into compartment away from electrically conductive contacts in order to minimize arcing and overheating.

Abstract: Systems and methods for limiting heating to prevent explosions in a gaseous environment containing an industrial control system are described. A method may include controlling heating in an electrical circuit component in response to a circuit failure so as to avoid reaching a temperature at or above a flash point of a gaseous component of the gaseous environment.

Abstract: A protection circuit module with a thermistor and a battery pack including the same. In one embodiment, a battery pack includes a protection circuit module and one or more bare cells. The protection circuit module includes a printed circuit board (PCB) having a protection circuit portion, a flexible film electrically connected to the PCB, and a thermistor mounted on the flexible film and configured to sense a temperature of bare cells and transfer the sensed temperature to the PCB. The one or more bare cells are electrically connected to the protection circuit module. Accordingly, the thermistor is mounted on the flexible film, so that it is possible to obtain the reliability of measuring the temperature of the battery pack.

Abstract: Active current surge limiters (100) and methods of use are disclosed. One exemplary system, among others, comprises a current limiter (140), including an interface configured to be connected between a power supply (110) and a load (120); a disturbance sensor (150), configured to monitor the power supply for a disturbance during operation of the load; and an activator (160), configured to receive a control signal (215) from the disturbance sensor (150) and to activate the current limiter (140) based on the control signal.

Abstract: A thermal protection circuit to protect an electronic device from over-heat comprises a temperature sensor, a hysteresis comparator and a switch circuit. The temperature sensor senses internal temperature of the electronic device and output an internal temperature signal with voltage. The hysteresis comparator outputs a power-off signal when the voltage of the internal temperature signal is lower than a low voltage threshold representing an a determined temperature, or outputs a power-on signal when the voltage of the internal temperature signal is higher than a high voltage threshold representing a restarting temperature. The switch circuit stops transmitting power signals to the electronic device in response to the power-off signal, or continues to transmit the power signals to the electronic device in response to the power-on signal.

Abstract: An over-current and over-voltage protection assembly apparatus including an over-current protection (OCP) device and an over-voltage protection (OVP) device is provided. One end of the OCP device is electrically connected to a first connection point, and the other end is electrically connected to a second connection point. One end of the OVP device is electrically connected to a third connection point, and the other end is electrically connected to the second connection point. The second connection point is a common point. The OCP device and the OVP device are modularized and integrated to an assembly. The first, second, and third connection points are connected to an external circuit to be protected, such that the OCP device is connected in series to the circuit to be protected, and the OVP device is connected in parallel to the circuit to be protected.

Abstract: Apparatus for detecting an overheating condition at an electrical power device and automatically breaking the circuit when the temperature exceeds a setpoint value. In various configurations the device is a receptacle adapted to be used in a wall mounted box or a receptacle unit that is plugged into an existing receptacle. A temperature sensor is wired parallel to a normally open test switch on a ground fault circuit interrupter or other circuit interrupting device. The temperature switch is responsive to the temperature local to the receptacle, such as is caused by poor connections to or in the receptacle or a near-overload condition. The temperature setpoint is less than the melting temperature of the insulation of the electrical wiring. The temperature sensor is a thermistor with a negative temperature coefficient that allows current to flow thereby latching the interrupting device in a tripped position until the device is reset for reuse.

Abstract: A system is provided for interrupting current in an electrical cable having an end plug. The system comprises a sensor coupled to the plug and having an output indicative of the temperature of the plug, and a current interrupting device coupled to the sensor for interrupting current in the cable when the temperature reaches a predetermined temperature.

Abstract: An electrical device including a heat sensing interrupter to enable a load to be selectively coupled to or disconnected from a power source in accordance with a level of a sensed temperature includes a relay assembly operable between a closed state when the sensed temperature is below a predetermined limit temperature, thereby enabling the coupling of the load to the power source, and an open state when the sensed temperature is above the predetermined limit temperature, thereby electrically disconnecting the load from the power source. The device further includes a sensor assembly including a light source operatively associated with a light sensor. The light sensor is configured to be sensitive to specific levels of the sensed temperature and the light source is configured to emit light along a plurality of optical paths at any one of a plurality of wavelengths sensitive to temperature.

Abstract: A load drive controller for controlling a heat generating member by a switching element includes a temperature detection portion for detecting a physical quantity of a level corresponding to a temperature of the switching element, a protection function portion for outputting an abnormality signal corresponding to an overheated state of the switching element when the physical quantity detected by the temperature detection portion is larger than a value, a control portion for causing the heat generating member to generate heat by driving the switching element via a driving portion. Furthermore, the control portion causes a temperature adjustment portion to increase the temperature of the heat generating member when the abnormality signal is input from the protection function portion.

Abstract: A battery pack is provided. The battery pack comprises a bare cell, a protective circuit board electrically connected to the bare cell to control the charge/discharge of the bare cell, a secondary protective device connected between the bare cell and the protective circuit board and installed on one surface of the bare cell, and an insulating member disposed on the one surface of the bare cell and having a width greater than that of the secondary protective device. Due to this construction, the insulation performance of the secondary protective device is improved and the assembly of the insulating member is facilitated.

Abstract: A system and method for limiting energy to an industrial control system is described. The method includes receiving a supply voltage, limiting the supply voltage so as to generate a limited voltage, and providing the limited voltage to a field transducer, the field transducer being disposed to monitor a parameter of the industrial process. A field current, that is generated in response to the limited voltage, is received from the field transducer and the field current is indicative of a magnitude of the parameter under normal operating conditions. During a fault condition, the field current is restricted with a variable resistance that is responsive to an amount of thermal energy generated during the fault condition so as to limit an amount of energy drawn by the control system.

Abstract: An embedded type multifunctional integrated structure and a method for manufacturing the same are disclosed. The present invention utilizes the concept of multi-layer design to integrated more than two passive components on a component structure that would be adhered to a substrate. Hence, the embedded type multifunctional integrated structure has an OCP function, an OVP function, an anti-EMI function, and an anti-ESD function at the same time. Therefore, the present invention effectively integrated two or more than one passive components in order to increase function of the embedded type multifunctional integrated structure. Moreover, the present invention effectively reduces the size of the passive components on a PCB and reduces the number of solder joints.

Abstract: An overvoltage protection device is adopted, which is provided with a conductive polymer that runs away thermally when the resistance value becomes V2/P or higher, given that the power consumption when actuated is P and the voltage of the secondary battery cell when fully charged is V.

Abstract: A system is provided for interrupting current in an electrical cable having an end plug. The system comprises a sensor coupled to the plug and having an output indicative of the temperature of the plug, and a current interrupting device coupled to the sensor for interrupting current in the cable when the temperature reaches a predetermined temperature.

Abstract: In a method for sorting PTC elements having different resistance-temperature characteristics, a predetermined voltage that allows a current to sufficiently decay is applied to each of PTC elements A and B, and the PTC elements are sorted on the basis of the difference between the times required for the currents passing through the PTC elements B to reach a predetermined value (e.g., 52 mA).

Abstract: A protection device detects a temperature in a predetermined monitoring place in an electronic apparatus 3 to protect the electronic apparatus 3, and includes an oscillating circuit 20 for generating a clock signal Vck having a predetermined cycle and a predetermined ON time, and a temperature detection circuit 16 for detecting the temperature in the monitoring place during the ON time of the clock signal Vck. The protection device shuts off supply of electric power to the electronic apparatus 3, when the temperature in the monitoring place exceeds a predetermined temperature.

Abstract: The invention relates to a device for switching at least one current includes a switching mechanism located in a switching chamber. The switching mechanism interrupts and connects a current path in an orderly fashion. Switching devices frequently have a protective function, e.g. relative to a power grid, and it is therefore desirable for supporting the protective function to identify faults and/or wear within the switching device. To this end, the switching device includes at least one temperature measuring unit that aids in detecting faults and wear within the switching device.

Abstract: Two devices for preventing internal combustion of equipment from spreading outwards includes a sampling circuit, a detecting and monitoring circuit, and a low-voltage datum power supply. The sampling circuit includes two thermal detectors. The detecting and monitoring circuit includes a first monitoring output end and a second monitoring output end. When two thermal detectors are both normal, the first monitoring output is inactive and the second monitoring output is inactive. When one of the thermal detectors is abnormal, the first monitoring output is inactive and the second monitoring output is active. When the two thermal detectors are both abnormal, the first monitoring output is active and the second monitoring output is active. The first monitoring output is configured to turn off the power supply of a fan and the second monitoring output is configured to drive an alarm unit.

Abstract: A protective circuit board and a battery pack using the same that broadens a mount region of a device and improves operability and proccessability thereof. The battery back comprises: a bare cell including a cap plate and an electrode terminal; and a protective circuit board positioned at the outside of the bare cell and formed of a flexible printed circuit board where a protection module, a positive temperature coefficient thermistor, and first and second power terminals are mounted. Accordingly, a space for mounting a number of protection devices and a space for forming a high current pattern are secured, and the work of mounting the protection devices and forming the high current pattern are easily performed. Furthermore, since any special structure for compensating a difference in the height of a protection device and an electrode terminal is not needed, the operability and proccessability increase.

Abstract: A thermal overload protection for an electrical device, particularly an electric motor (M), measures a load current supplied to the electrical device (M), and calculates the thermal load on the electrical device on the basis of the measured load current, and shuts off (S2) a current supply (L1, L2, L3) when the thermal load reaches a given threshold level. The protection comprises a processor system employing X-bit, preferably X=32, fixed-point arithmetic, wherein the thermal load is calculated by a mathematic equation programmed into the microprocessor system structured such that a result or a provisional result never exceeds the X-bit value.

Abstract: A Positive Temperature Coefficient (PTC) device, a Protective Circuit Module (PCM) including the PTC device, and a secondary battery including the Protective Circuit Module (PCM) are provided. A support portion is formed at one end of a conductive plate of the PTC device, a conductive layer disposed on the upper portion of the PTC main body is fixed to the Protective Circuit Module (PCM), and the support portion is fixed by a coated adhesive that is melted at a high temperature and then hardens when the high temperature is removed, thereby preventing the PTC device from swaying or twisting.

Abstract: A protective circuit module of a secondary battery and a secondary battery using the same, the protection circuit module including a positive temperature coefficient (PTC) device and a circuit board, wherein terminals of the PTC device are inserted into the circuit board to be coupled with connection terminals of the circuit board so that workability is improved and manufacturing costs are reduced. The secondary battery sensitively reacts to a temperature increase of the secondary battery by installing the PTC device on the upper or lower side of the circuit board, or extending one terminal of the PTC device to a bare cell of the secondary battery.

Abstract: A thermal trip device in which a bimetal (2) is heated by overcurrent and performs trip operation of a circuit by curvature of the heated bimetal (2), wherein at least one part of the surface of the bimetal (2) is made to be black or matte black (7). Thereby, temperature of the bimetal (2) can be highly accurately measured using a no-contact thermometer. Furthermore, a temperature measurement part (8) of the bimetal is provided with a bending part (11), and the surface of the bending part is made to be matte black.

Abstract: A circuit breaker includes a breaker enclosure, a plurality of conductor connections, and a temperature sensor. The breaker enclosure contains internal components that include a trip unit. The plurality of conductor connections electrically couple the trip unit to a plurality of power conductors. The temperature sensor is located to sense heat radiated by the conductor connections and is positioned inside the enclosure.

Abstract: A transient blocking unit (TBU) having reduced series impedance is provided. A TBU includes two or more depletion mode transistors arranged to provide a low series impedance in normal operation and a high series impedance when the input current exceeds a predetermined threshold. A nonlinear impedance element is included in the TBU that acts as a current limiter having a substantially constant saturation current over a range of applied voltages. This saturation current is selected to be the threshold current of the TBU. When the threshold is exceeded, the voltage developed across the nonlinear impedance element tends to drive the TBU into its high impedance state. When the operating current is below threshold, the TBU series resistance is relatively low because the nonlinear impedance element is in its low-resistance state. The nonlinear impedance element can be a separate circuit element, or it can be integrated with one or more of the TBU transistors.

Abstract: A circuit protection element and a circuit board with the circuit protection element are disclosed. The circuit protection element includes a metal base, and at least one opening slot located at the metal base. The metal base forms a positioning portion. One end of the metal base is fastened onto a circuit board. The bottom of the free end of the metal base contacts a conducting point located on the circuit board to make the circuit be in a conducting status. When the current is overloaded or the circuit is over-heated, the bottom of the free end of the metal base is heated so that the bottom of the free end of the metal base separates from the conducting point and the positioning portion is wedged with the circuit board. Thereby, the circuit becomes a broken circuit. The circuit protection element can prevent the electronic components from being burnt down.

Abstract: An inverter apparatus includes an inverter circuit, a temperature sensor, and a control circuit. The inverter circuit is driven by a PWM signal and includes switching elements that are divided in first and second groups. The temperature sensor detects a temperature of at least one of the switching elements of the first group. The control circuit controls a duty cycle of the PWM signal such that a first value of heat generated in the first group is equal to or greater than a second value of heat generated in the second group. The control circuit performs an overheat protection for protecting the inverter circuit from overheating when the detected temperature is equal to or greater than a threshold temperature.

Abstract: An electrical protection system, which can be connected between an electrical power supply and an electrical load, firstly includes a switch switchable between a normal state in which the switch is electrically connected in series between the power supply and the load such that an operating current passes through the switch and the load, and a fault sate in which the switch is disconnected with the load such that no current passes through the load. The switch switches to the fault state in an over-current or an over-temperature situation.

Abstract: A resetable over-current self-protecting semiconductor power device comprises a vertical power semiconductor chip and an over-current protection layer composed of current limiting material such as a PTC material. The over-current protection layer may be sandwiched between the vertical power semiconductor chip and a conductive plate, which could be a leadframe, a metal plate, a PCB plate or a PCB that the device is mounted on.

Abstract: A circuit breaker includes a bimetal electrically connected in series with separable contacts, and an operating mechanism structured to open and close the contacts. A temperature sensor distal from the bimetal includes an output having an ambient temperature signal. A trip circuit includes a first circuit having a first input electrically interconnected with a bimetal output to input a voltage representative of current, a second input electrically interconnected with the temperature sensor output to input the ambient temperature signal, a real-time thermal model structured to provide a corrected temperature dependent bimetal resistance as a function of the voltage and the ambient temperature signal, and an output including a current value which is a function of the ambient temperature signal and the corrected bimetal resistance. A second circuit includes an input having the current value and an output structured to actuate the operating mechanism in response to predetermined current conditions.