Abstract: Systems and methods are disclosed for compensating electrical leakage and detecting balanced electrical leakage for a machine hosting an HV system. In one embodiment, a fault detection and compensation system includes a DC power supply electrically referenced to a machine frame, a leakage correction switch connected to the machine frame, a current source controlled by the leakage correction switch, and a voltage measuring device that measures an offset voltage reflecting whether the HV system is in an unbalanced fault condition. The fault detection and compensation system further includes a leakage detection and compensation controller that compensates for the unbalanced fault condition by controlling the leakage correction switch and the current source.

Abstract: A signal source generates a reference voltage, and a voltage regulator receives the reference voltage and generates an output voltage and current. During normal operation, a pass element in the voltage regulator generates the output voltage, and a sense element generates a sense voltage. A first voltage detector detects a short-circuit condition using the sense voltage. A second voltage detector deactivates the pass element in response to the detection of the short-circuit condition. The second voltage detector also detects removal of the short-circuit condition and automatically reactivates the pass element. The first voltage detector may detect the short-circuit condition by detecting a drop in the sense voltage. The second voltage detector may detect the removal of the short-circuit condition by applying a test current to a load. Both the first and second voltage sensors may not consume any direct current power during normal operation of the voltage regulator.

Abstract: A voltage clamp protection circuit to protect against overvoltage conditions where there is insufficient current to blow a fuse. The voltage clamp protection circuit includes a voltage clamp and a thermal cutoff. The voltage clamp clamps any overvoltage to a clamping voltage. If an overvoltage condition persists for too long the voltage clamp dissipates a sufficient amount of heat to activate the thermal cutoff creating an open circuit that protects the rest of the circuit. The voltage clamp protection circuit may be used in combination with a variety of other protection circuits to provide increased protection.

Abstract: The present invention provides a protection circuit coupled to a tip lead and a ring lead in a subscriber line interface circuit formed on a silicon substrate. The protection circuit includes first and second diodes formed on the silicon substrate and coupled to the tip lead and the ring lead, respectively. The first and second diodes are configured to provide a path from the tip lead or the ring lead to ground in response to a positive voltage at the tip lead or the ring lead. The protection circuit also includes a silicon-controlled rectifier formed on the silicon substrate and configured to provide, in response to a negative voltage at the tip lead or the ring lead, a path from the tip lead or the ring lead to ground via the silicon-controlled rectifier.

Abstract: A High Voltage Interlock Loop (HVIL) system and Control Strategy is provided for an alternative fuel vehicle including an electric, a hybrid electric, or a fuel cell vehicle. Generally, the HVIL system having associated logic including an HVIL circuit is provided to allow the vehicle to operate in either a high voltage (HV) or power mode powered by a power source or a HVIL interrupt mode based on an operational state of the HVIL system. When HVIL circuit fails shorted high, low or open, a Diagnostic Trouble Code (DTC) is set and the Service Soon Lamp is illuminated to indicate to a service technician that additional safety precautions need to be taken when servicing the HV system. The HV contactors may or may not be activated providing HV to the vehicle when HV is not expected to be present at connectors and HV devices.

Abstract: A method for assessing metal vapor arcing risk for a component is provided. The method comprises acquiring a current variable value associated with an operation of the component; comparing the current variable value with a threshold value for the variable; evaluating compared variable data to determine the metal vapor arcing risk in the component; and generating a risk assessment status for the component.

Abstract: The invention relates to a monitoring unit for photovoltaic modules, wherein the modules are designed for a direct conversion of radiation energy, such as e.g. solar energy, into electric energy, and the system is designed function monitored, wherein each photovoltaic module (1-3) has assigned to it its own monitoring unit (4-6; 15, 16; 28) and all monitoring units are centrally monitored and documented by a control computer.

Abstract: A process control system (1) comprises at least one process control computer (2) and field units (4) connected thereto via a bus system. An, in particular, intrinsically safe data transmission device (5) is connected between the process control computer and the assigned field units. This data transmission device comprises a data adaptation device (6) and a data distributing device (7). In order to be able to connect more field units per data adaptation device while simultaneously reducing the costs per field unit, the data adaptation device (6) and its assigned supply devices (8) have an explosion-proof design, and each supply device is connected to the data distributing devices via an explosion-proof line, whereby these data distributing devices or field units connected thereto have a barrier device for limiting the applied power.

Abstract: Circuit and method for providing over-current and overloading protection with a single additional pin. A converter controller circuit is provided that includes a voltage controlled oscillator and outputs upper and lower gating signals for driving the upper and lower driving transistors in a voltage converter, for example, in an inductor-inductor capacitor half-bridge circuit topology. A current sense input pin of the circuit receives a voltage corresponding to the current flowing in the half-bridge circuit. A feedback input pin has an external capacitor coupled to it and receives a voltage from an output voltage sensor at the output terminals. Over-current protection is provided by sensing the voltage at the current sense input pin with no external components needed. Overload protection is provided by utilizing the external feedback capacitor and the feedback input pin during overload conditions. Methods for providing over-current and overload protection are disclosed.

Abstract: A method for recording analog signals and digitally encoded information associated with primary and secondary devices of an electric power system includes: receiving a plurality of analog output signals and a plurality of ON/OFF status signals from the electric power system; receiving a time-synchronization analog signal and/or a time-synchronization data packet from a time synchronization source; maintaining an internal clock synchronized with the synchronization source; sampling and digitizing the plurality of analog output signals; monitoring a status and/or a change of status of the plurality of ON/OFF status signals; receiving digitally encoded information signals as incoming data packets; decoding and analyzing the incoming data packets; analyzing the plurality of analog output signals and digitally encoded information signals using a triggering algorithm; and storing digitized analog output signals and digitally encoded information signals together with corresponding timing information in a record as f

Abstract: There is provided a backlight unit having a protection circuit using a center-tap, the backlight unit including: a current balancing unit including a plurality of primary coils individually transmitting the lamp driving power from an inverter unit to the lamps, and a plurality of secondary coils each formed of one conductor having a center-tap, and receiving an electromagnetically induced voltage from each of the plurality of primary coils, the one end and the center-tap of each of the plurality of secondary coils connected in series with the one end and the center-tap of the neighboring secondary coil to form at least one closed loop and maintain current transmitted to each of the lamps balanced; a sensing unit sensing a variation in current of the closed loop and a variation in current of the primary coil from the current balancing unit; and a determination unit determining whether each of the lamps performs an abnormal operation or not.

Abstract: Apparatuses and methods for coupling a voltage supply input of an interface circuit of a communication device to a reference potential in response to at least one of an over-voltage and an over-current occurring in a communication line.

Abstract: Disclosed is an integrated electronic circuit comprising a core circuit that generates a useful signal as well as a buffer for storing the useful signal. The buffer stores the last read value of the useful signal for a predetermined period of time when the power supply is interrupted, and the buffer is disconnected from the power supply of the other circuits.

Abstract: A High Voltage Interlock Loop (HVIL) system and Control Strategy is provided for an alternative fuel vehicle such as an electric, a hybrid electric, or a fuel cell vehicle. Generally, the HVIL system having associated logic including an HVIL circuit is provided to allow the vehicle to operate in either a high voltage (HV) or power mode powered by a power source or a HVIL interrupt mode based on an operational state of the HVIL system. When HVIL circuit fails shorted high, low or open, a Diagnostic Trouble Code (DTC) is set and the Service Soon Lamp is illuminated to indicate to a service technician that additional safety precautions need to be taken when servicing the HV system. The HV contactors may or may not be activated providing HV to the vehicle when HV is not expected to be present at connectors and HV devices.

Abstract: A switched power rail monitor compares voltages provided by a switched power rail and a power source to detect a predetermined differential indicative of a fault at the switched power rail. A switched power rail fault is communicated to a power manager to take corrective action, such as cutting off power to information handling system components. In one embodiment, a pair of bipolar junction transistors monitor the voltage differential to send an enable signal if the differential is within limits and a disable signal if the differential exceeds limits.

Abstract: A discharge lamp ballast is designed to limit or interrupt its AC output power to the discharge lamp upon occurrence of an abnormal discharge outside of an arc tube. A detector is included to examine a lamp voltage once in each of the positive and negative half-cycles or in each one complete cycle of the AC output power, and identifies the abnormal discharge when there is a particular change in the monitored lamp voltage. The particular change may be defined by a single logic or by combination of several logics each designed to represent specific characteristic for the abnormal discharges of several types.

Abstract: A sensorless protection circuit comprises a detection module. The detection module receives a reference voltage signal and receives a load voltage signal from a MOSFET. The detection module generates a detection signal having a first state and a second state according to the reference voltage signal and the load voltage signal. A protection module receives the detection signal and maintains the MOSFET in an ON state when the detection signal is in the first state and transitions the MOSFET from the ON state to an OFF state when the detection signal is in the second state. The detection signal is in the second state when the MOSFET is in at least one of a current overload condition, an over temperature condition, a startup inrush current condition, and a short circuit condition.

Abstract: A system and method for accomplishing power swing blocking and unstable power swing tripping schemes during disturbances of electrical networks is disclosed. The disclosed system and method eliminates the requirement of stability studies. The no-setting scheme utilizes the swing center voltage of the electrical network to carry out its functions.

Abstract: A power supply apparatus includes: a plurality of batteries; a changeover portion switching the connection between the plurality of batteries; a short-circuit battery detection portion, if an internal short-circuit is produced in any of the plurality of batteries, detecting this internal short-circuit battery; and a changeover control portion, if the short-circuit battery detection portion detects the internal short-circuit battery, allowing the changeover portion to switch the connection between the plurality of batteries in such a way that this internal short-circuit battery and at least one of the other batteries are connected in series to thereby form a closed circuit.

Abstract: A load status indicator is disclosed for determining whether power is available to, and current is flowing through, a load. A first visual status indicator may light up when power is available to the load but current is not flowing through the load. A second visual status indicator may light up when power is available to the load and current is flowing through the load. A bi-color light-emitting diode may comprise the first and second visual status indicators. Transistors may be used to permit or prevent current from flowing through the visual status indicators. In some embodiments, a reed switch or a hall-effect sensor may be used to determine whether current is flowing through the load.

Abstract: A power supply unit that provides uninterrupted power to an aircraft power bus during switchovers of the aircraft bus from one power source to another. The power supply unit includes circuitry to distinguish between loss of bus power due to switchovers between power sources and loss of bus power due to shutdown of the aircraft. The power supply unit includes a low voltage lockout circuit to interrupt the supply of power when the aircraft bus voltage falls below a minimum value.

Abstract: An Insulated Gate Bipolar Transistor (IGBT) fault protection system is provided. The fault protection system includes a GVPA, a gate voltage clamper, and a soft-off unit. The GVPA analyzes a gate voltage pattern of an IGBT to determine whether or not a fault has occurred. The gate voltage clamper prevents an increase in a gate voltage of the IGBT according to an output signal that the GVPA outputs when a fault has occurred. The soft-off unit softly turns off the IGBT according to an output signal that the GVPA outputs when a fault has occurred.

Abstract: A circuit breaker for a solar module, wherein a plurality of solar cells working in normal operation and when shaded are connected in series. At least one controlled electrical switch element serves as a bypass element and is connected in parallel with its contact gap to a plurality of solar cells. A supply circuit provides a control voltage for controlling the control electrode of the bypass element. An isolating circuit blocks the voltage applied to the contact gap of the bypass element in the normal operation and switches the voltage that is applied to the contact gap to the supply circuit when at least one solar cell is shaded.

Abstract: Disclosed is a circuit to provide protection from an over voltage signal. The circuit protects against load dumps or positive transients applied to any electronic unit. The circuit isolates the protected circuitry from the transient voltage by two ways. The circuit limits the current flow and clamping the voltage using a small package zener diode. Additionally, the circuit causes a specific voltage drop between the applied transient and the protected circuit.

Abstract: An apparatus includes at least one load, a control circuit, and a power supplying apparatus including a control-use power supply part, at least one load-use-power supply part, and a power supply control part. The control-use power supply part supplies first electric power to the control circuit, and stops supplying the first electric power and outputs a first detection signal when detecting a first abnormal operation state. The at least one load-use power supply part supplies second electric power to the respective at least one load, and stops supplying the second electric power and outputs a second detection signal when detecting a second abnormal operation state. The power supply control part causes the control-use power supply part to stop supplying the first electric power according to the first detection signal, and causes the at least one load-use power supply part to stop supplying the second electric power according to the second detection signal.

Abstract: Systems and methods are disclosed for compensating electrical leakage and detecting balanced electrical leakage for a machine hosting an HV system. In one embodiment, a fault detection and compensation system includes a DC power supply electrically referenced to a machine frame, a leakage correction switch connected to the machine frame, a current source controlled by the leakage correction switch, and a voltage measuring device that measures an offset voltage reflecting whether the HV system is in an unbalanced fault condition. The fault detection and compensation system further includes a leakage detection and compensation controller that compensates for the unbalanced fault condition by controlling the leakage correction switch and the current source.

Abstract: A circuit for protecting a motherboard includes a first transistor (Q1), a second transistor (Q2), a third transistor (Q3), and a power control circuit (200). The power control circuit includes a power controller (10), and a power supply (20), and a fourth transistor (Q4) connected therebetween. The first transistor is supplied with a CPU power signal on the motherboard. The second and third transistors are jointly supplied with a sleep signal and turned on if the CPU power signal is at low level after the power supply is turned on, thereby turning off the fourth transistor and grounding a PWRBTN# pin of the power controller to turn off the power supply for protecting the motherboard from damage due to no CPU power-on voltage applied thereto after the power supply is turned on.

Abstract: A feedback and protection circuit is provided for detecting voltage and current of a cold cathode fluorescent lamp (CCFL) of a liquid crystal display (LCD) panel backlight apparatus and integrating all voltage and current input signals to output single current and voltage feedback signals to a PWM controller, so as to stabilize and control the voltage and current of the CCFL and determine whether any detected input signal is abnormal. If any CCFL is short circuited (CCFL is touched by people) or open circuited (CCFL is not lit), an abnormal status protection signal will be produced and sent to the PWM controller to stop all outputs of the backlight apparatus to prevent damages to circuit components or injuries to people. The circuit is designed in an integrated circuit to achieve the effects of reducing the area occupied by the circuit component layout and lowering the overall cost.

Abstract: A transient blocking unit (TBU) includes at least two depletion mode transistors connected to each other such that they can rapidly switch from a normal low-impedance state to a high-impedance current blocking state in response to an over-voltage or over-current condition. This behavior makes TBUs useful for protecting electrical devices and circuit from harmful electrical transients. Some kinds of transistors can exhibit a phenomenon known as current collapse, where channel conductance is temporarily reduced after exposure to high voltage. Although current collapse is undesirable, transistors exhibiting current collapse can have otherwise favorable properties for TBU applications. According to the present invention, a TBU is provided where a diode is placed in parallel with a TBU transistor that can exhibit current collapse. The diode prevents high power dissipation in a current collapsed transistor, thereby reducing the vulnerability of the TBU to permanent damage or destruction in service.

Abstract: A protection circuit of an LCD panel. The LCD panel includes a display cell coupled between a data electrode, a gate electrode and a common electrode. A switch includes a first terminal and a second terminal. The first terminal is coupled to the data electrode, the gate electrode or both. The switch is turned on when a voltage level of the first terminal or the second terminal exceeds a threshold voltage. An ESD protection circuit includes a capacitive load and a resistive load, coupled between the second terminal and the common electrode.

Abstract: A test device is provided for testing stability of a computer when the computer is started up or shut down. The test device includes a monolithic chip and a switch module. The monolithic chip includes an input port and an output port. The input port receives a high level or a low level signal from the computer. A test control module is disposed in the monolithic chip. The switch module includes an input pin coupled to the output port of the monolithic chip and a pair of output pins corresponding to the input pin. The pair of output pins is connected to the computer, for controlling the computer to be started up or shut down. The input port of the monolithic chip is connected to the computer for detecting a state of the computer.

Abstract: Some embodiments of a method, apparatus, and system for power source failure prediction are described. According to some embodiments, the system may include, among other things, a display device to draw power from a direct current power source, two or more electrical lines positioned on either side of the direct current power source to determine a voltage across the direct current power source, and a power source management unit coupled to the two or more electrical lines to measure the voltage. In some embodiments, a cell monitoring unit may be coupled to the two or more electrical lines to measure the voltage for the power source management unit, where the cell monitoring unit is capable of converting the measured voltage to a digital signal, measuring the rate of change of the voltage over a period of time, and providing information to the power source management unit. Other embodiments are described.

Abstract: A bus driver device is provided with a bus driver circuit connected to a bus line and a overvoltage protection section connected between the bus line and a power supply line. The overvoltage protection section has an overvoltage protection function for the bus line. Further, the bus driver device is provided with a switching circuit for on/off-controlling the overvoltage protection function based on a voltage of the bus line and a voltage of the power supply wiring.

Abstract: A metering device of a power substation and method are provided for operating on a secondary analog waveform output by a transformer assembly receiving a primary waveform. The method includes stepping down the secondary waveform and generating a corresponding output signal; operating on the corresponding output signal for generating a corresponding first digital signal having a value proportional to the corresponding output signal and within a first range; and operating on the corresponding output signal for generating a corresponding second digital signal having a value proportional to the corresponding output signal and within a second range. The method further includes processing the first digital signal and outputting a corresponding first output signal; processing the second digital signal and outputting a corresponding second output signal; processing the first and second output signals; and generating output corresponding to the processing of the first and second output signals.

Abstract: A load status indicator is disclosed wherein a green light-emitting diode of a bi-color light-emitting diode lights up when power is available to but not being used by a monitored device, whereas a red light-emitting diode of the bi-color light-emitting diode lights up when the monitored device is drawing current. The load status indicator utilizes a coil in series with the monitored device, a reed switch controlled by the coil, and field-effect transistors to control which light-emitting diode lights up depending on whether power is available and whether the monitored device is drawing current.

Abstract: A method and a device for shutting down a drive during a power outage are disclosed. The method and device include a matrix converter, several commutation capacitors on the power line side, a switch unit on the power line side and a resistor unit. During a power outage, the matrix converter is immediately disconnected from the power supply, and the resistor unit is connected to the input terminals of the matrix converter in such a way that the amplitude of a voltage applied to the resistor unit equals the amplitude of an actual capacitor voltage space vector, and the speed setpoint is set to zero. This enables a drive with a matrix converter to be shut down during a power outage by way of a pulsed resistor.

Abstract: The protective circuit for analog sensors has transistors respectively located in a power supply voltage line and in a ground line. The control electrode of said circuit is located between the supply voltage and the ground via a voltage divider. The sensor output line is connected to the ground potential of the control device via a pull-down resistor. During normal operation, both transistors are connected. Both transistors switch off when the ground line is disconnected. This prevents a current from flowing to the sensor output line via the power supply voltage line, the voltage divider or via the sensor. The sensor output line is, in fact, pulled to the ground potential by the pull-down resistor. This prevents the appearance of a defective signal that could emulate a wanted signal.

Abstract: A protection apparatus for a semiconductor device includes a DC power source, a load, a semiconductor device arranged between the DC power source and the load and switches the load between a driving state and a stopping state, a comparator comparing a voltage drop across the semiconductor device with a predetermined reference voltage, and a cut off unit cutting a conduction of the semiconductor device between the DC power source and the load when the voltage drop is greater than the predetermined reference voltage. A constant of the circuit element is set so that the reference voltage is not greater than a critical voltage. The critical voltage is a product of the on-resistance of the semiconductor device when its channel temperature is at an upper limit of the permissible temperature, and a minimum current value which causes the channel temperature to reach the upper limit of the permissible temperature by the self-heating due to Joule heat.

Abstract: A signal driving system generates an output swinging between a first power supply (e.g., about 1.2 Volts), powering first and second drivers, and a second power supply (e.g., about 3.3 Volts), powering a first current mirror. The second power supply is generated external to the signal driving system and is used to allow for a desired common-mode differential output signal range. However, the second power supply produces voltage at a level above a rating of the devices in the signal driving system. Therefore, protection devices are used to protect the elements of the signal driving system from the second power supply. Accordingly, through use of the signal driving system of the present invention, a high voltage current mode driver can operate in a low voltage process without damaging the devices in the signal driving system.

Abstract: The present invention relates to a circuit arrangement and a method for load diagnosis of a switch having a first and a second load connecting terminal. A first and a second current source arrangement are provided, which can in each case be connected to one of the load connecting terminals of the switch and which supply, depending on potential conditions at the said load connecting terminals, currents in a first and second current direction or oppositely to the said first and second current direction to the load connecting terminals. Furthermore, an evaluation circuit is provided, which evaluates the currents flowing to the first and second load connecting terminals and provides a load state signal depending on the said currents.

Abstract: An evaluator (210) having an input (207) for receiving a signal indicative of a channel current sensed via a sensor in a mutlichannel current sharing system, and circuitry (313, 319) coupled to the input (207) and responsive to the signal for indicating an unreliable sensing for the sensor when a low current condition occurs for a time period exceeding the switching time period of the channel current. Further, the apparatus can include an additional input (207) and circuitry (313, 319) for evaluating an additional sensor sensing an additional channel current. The low current condition is characterized by thresholds corresponding to the peak level and a valley level of the channel current over a switching time period.

Abstract: A system for detecting an isolation fault in a multi-stack fuel cell system. The system determines the percentage of the voltage from each stack in the multi-stack that contributes to the voltage at a positive terminal and a negative terminal of the stack when a no-fault condition exists. The system then uses those percentages and the actual measured stack voltages to determine if a fault condition exists. The actual voltage measurement at the positive terminal is compared to the calculated voltage contribution from each stack at the positive terminal for the no-fault condition. Also, the actual voltage measurement at the negative terminal is compared to the calculated voltage contribution from each, stack at the negative terminal for the no-fault condition. If there is a significant enough different between the calculated voltage for a no-fault condition and the calculated percentage of the actual voltage measurements, than a fault condition exists.

Abstract: A power supply unit includes a battery, a motor which is driven by the battery, an electric power converting device which is provided between the battery and the motor, a simulated electric leak generating device which generates an electric leak state between the battery and a vehicle body, and an electric leak detecting device which detects a simulated electric leak. A diagnostic system which performs a diagnosis of operating performance of the electric leak detecting device includes an opening/closing device which connects/disconnects the electric power converting device to/from the battery, and an opening/closing detecting device which detects opening/closing of the opening/closing device and which outputs a result of detection to the simulated electric leak generating device and the electric leak detecting device.

Abstract: In a power supply protection circuit, a FET and a diode are connected to a power line so as to protect an inner circuit from an excessive voltage caused by a device connected to an IEEE1394 bus. A switching circuit connected to the power line turns off the FET when the voltage of a port exceeds a reference voltage, which is lower than the withstand voltage of the inner circuit.

Abstract: An integrated solenoid system including a single housing containing a solenoid, a controller and one or more electrical connections. The controller includes temperature compensating means and/or voltage compensating means thereby providing predetermined, substantially constant currents to said solenoid. The housing includes an integral two-part end cover.

Abstract: An apparatus for power source protection with automatic latch-off is provided for use in an electronic apparatus. The electronic apparatus includes a power supply and a main functional circuit, such as a notebook computer. The power supply is coupled to the main functional circuit via an electronic switching device, so as to power the main functional circuit via a power source terminal of the electronic switching device. The apparatus for power source protection with automatic latch-off includes a low-voltage-triggered latch-off device and a low-voltage-triggered responding device. The low-voltage-triggered latch-off device is coupled to the electronic switching device, so as to control the on or off state of the electronic switching device. The low-voltage-triggered responding device is coupled to the power source terminal and the low-voltage-triggered latch-off device.

Abstract: Apparatus and method for controlling movement of an object through a medium using a magnetic field by combining the magnetic field of a primary electromagnetic coil having a central axis with the magnetic fields of a plurality of secondary electromagnetic coils having axes generally parallel to the central axis of the primary coil and positioned within the primary coil to produce an operational magnetic field by which movement of the object in a medium is controlled outside of the primary coil.

Abstract: A collector voltage of a power management semiconductor device is detected by a first comparator, and when the detected collector voltage exceeds a first reference voltage, the first comparator outputs a first detection signal. Furthermore, a gate voltage of the power management semiconductor device is detected by a second comparator, and when the detected gate voltage exceeds a second reference voltage, the second comparator outputs a second detection signal. The second reference voltage is a minimum gate voltage for feeding a rated power to the power management semiconductor device or over, and less than a line power voltage of a drive circuit of the power management semiconductor device. When both the first detection signal and second detection signal are being outputted, the gate voltage is reduced by a gate voltage reduction means so as to protect the power management semiconductor device from overcurrent and overvoltage.

Abstract: A system and method for controlling operation of a component include using at least two sensors arranged to sense an operating condition of the component. The system further includes a controller that controls the component in response to feedback signals output by one or more of the sensors. The controller also determines how the sensor feedback signals are to be used in controlling the component. To this end, the controller includes a model-based statistical filter for each one of the second sensors.

Abstract: A drive control apparatus comprises a drive signal supply unit for generating, when a power-supply voltage is supplied to the drive control apparatus, a drive signal, which is used for driving a load from this power-supply voltage, and for supplying this generated drive signal to an output port of a microcomputer, a drive signal stop unit for stopping, when the power-supply voltage has a value that is equal to or less than a predetermined value, the drive signal supply unit from supplying the drive signal, and a drive signal delay unit for delaying the drive signal outputted by the drive signal supply unit.