Abstract: A circuit for controlling time sequence of an electronic device, the circuit comprises a delay unit to receive a first control signal, a first switch unit connected to the delay unit to receive the first control signal after a rising edge of the first control signal, a second switch unit to promptly receive the first control signal in response to a falling edge of the first control signal, and a voltage output unit connected to the first and second switch units. The voltage output unit is selectively controlled by the first or the second switch unit to output a second or a third control signal to turn on or off the electronic device.

Abstract: A temperature controlling alarm circuit includes a power source including a high level terminal and a low level terminal, the low level terminal being grounded; a thermal diode including an anode and a cathode, the anode connected to the high level terminal; a resistor connected to the thermal diode in series; another resistor parallelly connected in parallel to the thermal diode and the said resistor which connected in series; a pnp-type transistor including a base, an emitter and a collector, the base and the emitter being respectively connected to two terminals of the another resistor; and an alarm connected between the collector of the PNP-type transistor and the low level terminal of the power source.

Abstract: An optical receiver is arranged at a location in a scene. The optical receiver includes a photo sensor configured to detect spatio-temporal modulated optical signals directed at the scene from a set of spatially dispersed optical transmitters, and to convert the optical signals from each of the optical transmitters to a corresponding electronic signal. The electronic signals can be analyzed to determine geometric properties of the location in the scene.

Abstract: A power supply control circuit includes a first switch unit comprising an input terminal to receive a control signal, and a number of second switch units. The second switch units are each connected between an input power source and a power output terminal. The first switch unit controls the number of second switch units to be turned on in response to the control signal being in a first status, so as to control the number of power output terminals to output corresponding power sources. The first switch unit controls the number of second switch units to be turned off in response to the control signal being in a second status, so as to direct the power output terminals to not output the corresponding power sources.

Abstract: A control circuit for a single-phase AC motor of a dryer, including at least an electronic starting circuit including at least a starting control unit, a first drive circuit, and a bidirectional triode thyristor, a second drive circuit, and a mechanical switch K. The bidirectional triode thyristor is serially connected to a starting winding and a starting capacitor of the motor, and connected to an AC input. The starting control unit is connected to a control end of the bidirectional triode thyristor via the first drive circuit. The mechanical switch K is serially connected to an electrical heating wire, and is connected to the AC input. The starting control unit is connected to a control end of the mechanical switch K via the second drive circuit. The first drive circuit and the second drive circuit are interlocked with each other.

Abstract: A motor controller for an electronic driving motor, including at least a controlling and processing unit, an interface circuit unit, and an identifying circuit. The controlling and processing unit is disposed on a mother circuit board. The interface circuit unit and the identifying circuit are disposed on a daughter circuit board. The mother circuit board and the daughter circuit board are connected to each other whereby forming electric connection. The identifying circuit inputs an identifying signal to the controlling and processing unit. The controlling and processing unit automatically configured types of input/output ports of the interface circuit unit according to the identifying signal. The motor controller of the invention enables motor manufactures to reduce the number of motor types for management, reduces development cost, development cycle, and product cost, simplifies a production technique, and improves efficiency.

Abstract: A motor controller for an air-conditioner fan, including at least a central processor, a power drive module, a power supply module, and a communication interface circuit. The power supply module supply working power to the central processor and the power drive module. Multiple instruction input ports are connected to the central processor. Multiple parameters N are set in the central processor and corresponding to the instruction input ports. The central processor controls the power drive module to drive a motor of the air-conditioner fan to operate at a parameter N corresponding to an instruction input port as the instruction input port is connected. The communication interface circuit is communicated with an external communication device. The external communication device changes the parameters N in the central processor corresponding to the instruction input ports via the communication interface circuit.

Abstract: A fan circuit controls a speed of a fan. A control chip outputs a pulse width modulation (PWM) signal that changes with the temperature of an electronic device that the fan is mounted in. An input circuit converts the PWM signal into a continual voltage signal. An amplifier circuit amplifies the voltage signal and outputs a control signal. When the control signal is less than a threshold voltage, the control circuit is turned on and the fan receives current which is less than preset current. When the control signal is greater than the threshold voltage, the control circuit is turned off and the fan receives current which is greater than the preset current.

Abstract: A computer system on/off test apparatus includes a parameter setting and test control circuit, a test indicating circuit, a voltage converting circuit, and an on/off signal switch circuit. The parameter setting and test control circuit includes a micro control unit (MCU) to set a number of test times and control an on/off test of a motherboard. The test indicating circuit is operable to display the number set by the parameter setting and test control circuit, and display a successful number of test times of the on/off test. The voltage converting circuit is operable to convert a first voltage received from a first standby power connector to a second voltage. The on/off signal switch circuit is operable to switch the first and second voltages according the control by the MCU.

Abstract: The relevance of documents is automatically determined based upon a weighted tree. Terms considered to be relevant are assigned to the leaf nodes of a tree data structure. A location can also be specified in a leaf node, indicating where in a document the term must appear to be considered relevant. Internal nodes of the tree are assigned operators (e.g., add, maximum or minimum). The connections between nodes are assigned weights. A relevance value for a given document is calculated as a function of occurrence in the document of terms assigned to leaves, operators assigned to internal nodes, and weights assigned to the associated node connections. Weighted trees can be used to process search queries. Documents with high relevance scores calculated against the tree can be returned to a user as the results to a query.

Abstract: A linear voltage regulator circuit includes first and second voltage input terminals to receive a first or second external voltage, a voltage output terminal, a voltage regulator unit, a voltage switch unit, and a voltage detecting unit. The voltage regulator unit selectively receives the first or second external voltage controlled by the voltage switch unit. The voltage detecting unit outputs a first control signal to control the voltage switch unit to output the first external voltage to the voltage regulator unit, in response to an output voltage of the voltage output terminal being less than or equal to a predetermined value. The voltage detecting unit outputs a second control signal to control the voltage switch unit to output the second external voltage to the voltage regulator unit in response to the output voltage being greater than the predetermined value.

Abstract: A fan control system includes a temperature detecting circuit and a rotation rate control circuit. The detecting circuit includes an amplifier and a thermal diode. The detecting circuit detects temperature and outputs a voltage signal. The control circuit receives the voltage signal and controls the rotation rate of the fan according to the voltage signal.

Abstract: A fan control circuit includes an integrated circuit (IC), a thermistor, and a transistor. A first input of the IC is connected to a fan power supply. A second input of the IC is connected to a stand-by power supply. A base of the transistor is grounded through the thermistor. An emitter of the transistor is connected to an output of the IC. A collector of the transistor is connected to a fan.

Abstract: The temperature control circuit, to keep a temperature of an enclosed space within a temperature range, comprises a cooling unit to keep the temperature of the enclosed space below a maximum temperature of the temperature range, a heating unit to keep the temperature of the enclosed space above the minimum temperature of the temperature range, and an indicating unit to indicate whether the temperature is within the temperature range.

Abstract: The lighting delay circuit can keep a light being on for a predetermined time then turn off the light. The circuit comprises a thermistor to sense temperature around the light when the light is on, an electronic switch controlled by the thermistor, and a relay controlled by the electronic switch to turn off the light when the electronic switch is turned on.

Abstract: A fan control system includes a temperature detecting circuit and a rotation rate control circuit. The detecting circuit includes a first amplifier, a second amplifier, and a thermistor. The control circuit includes a first terminal, a second terminal, and a third terminal. The detecting circuit detects temperature and outputs a voltage signal. The control circuit receives the voltage signal and controls the rotation rate of the fan according to the voltage signal.

Abstract: Thumbnail image substitution is described. In embodiments, a navigation input is received that is effective to move from a first view of a media content page to a second view of the media content page. The second view includes a region of the media content page that is not included in the first view of the media content page. A thumbnail image is displayed in the region of the media content page that is not included in the first view and that will display the media content. The thumbnail image is replaced to display the media content in the region of the media content page that corresponds to the second view of the media content page.

Abstract: A fully curable jettable composition having a viscosity less than 30 cps at a temperature within the range of 15° C.-180° C. comprising (i) at least one low viscosity reactive resin; (ii) at least one higher viscosity resin having a viscosity greater than twice that of the low viscosity resin and a functionality of greater than or equal to 2; (iii) at least one curable toughener, (iv) at least one initiator for the polymerisation of the resins, and (v) at least one stabiliser for delaying the curing of the resins of the composition. The composition can be jetted from piezo electric printing heads under the control of a computer program to form a multi-layered article, for example, a three dimensional article, in which the adjacent droplets merge and are cured homogeneously together.

Abstract: A protection circuit includes a switch and a transistor. A first end of the switch is connected to a power source. A second end of the switch is connected to an electronic device via a first resistor. A third end of the switch is connected to the power source via a second resistor. A base of the transistor is connected to the second of the transistor via a third resistor, and grounded via a fourth resistor. A collector of the transistor is connected to the power source. An emitter of the transistor is connected to the electronic device.

Abstract: A fan control system includes a linear adjustor, an input/output controller, and a temperature sensor. A first terminal of the linear adjustor is connected to a first power supply. A second terminal of the linear adjustor is connected to a fan and grounded via a first resistor and a second resistor in series. A third terminal of the linear adjustor is connected to a node between the first resistor and the second resistor. A first terminal of the input/output controller is connected to the third terminal of the linear adjustor via a third resistor. A second terminal of the input/output controller is connected to the temperature sensor.