Entries |
Document | Title | Date |
20080218148 | Intelligent Power Control - The Power Control Device can communicate with connected load or appliance for identification and control, and Intelligent Power Control. The Power Control combines Triac (or similar technology) function with Relay (or similar technology) function in a single intelligent current and temperature sensing multipurpose Dual Mode device. This combination of modes and the ability to automatically switch between them provides the capability to provide dimming to appropriate appliances as well as provide high power to devices not requiring dimming or variable power control. One embodiment is a universal power outlet which does not need to be dedicated to one function but can serve as a dimmer or as a full power relay switched circuit. The Power Control Device has sensing, reporting, control and interface capabilities necessary for a high function automation system. These include interface to command or controller systems, ability to sense states and function with partial or full autonomy. | 09-11-2008 |
20090051344 | TRIAC/SCR-BASED ENERGY SAVINGS DEVICE, SYSTEM AND METHOD - A TRIAC/SCR-based energy savings device, system and method ( | 02-26-2009 |
20090128119 | DIFFERENTIAL OUTPUT CIRCUIT - A differential output circuit comprising: a first power supply line; a constant current source that includes a current input terminal coupled to the first power supply line; an output common mode voltage setting unit that includes a variable resistor element, one end of the variable resistor element being coupled to a current output terminal of the constant current source; and a signal transmission unit that includes a first power supply terminal and a second power supply terminal, the first power supply terminal being coupled to the other end of the variable resistor element, and the second power supply terminal being coupled to a second power supply line which supplies a voltage lower than a voltage of the first power supply line. | 05-21-2009 |
20090160422 | BOOST CONVERTER WITH ADAPTIVE COIL PEAK CURRENT - A power conversion circuit operates in a discontinuous switching mode over a wide range of loading conditions and varies a coil peak current to maintain efficiency over the wide range of loading conditions. The coil peak current is adjustable based at least in part on a feedback signal generated in response to a load condition. | 06-25-2009 |
20100052647 | PROGRAMMABLE POWER DISTRIBUTION SWITCHES WITH TWO-LEVEL CURRENT SENSING - Programmable power distribution switches with two-level current sensing are disclosed. In a particular example, a power distribution switch includes a programmable output device having a resistance based on a programmed maximum output current and generates an output voltage based on the resistance and a load current. The example power distribution switch also includes a reference voltage generator that is configured to generate a reference voltage corresponding to the output voltage when the load current is substantially equal to the programmed maximum output current. A current limiter is also included to reduce the load current in response to a comparison of the output voltage and the reference voltage, when the comparison is indicative of the load current exceeding the programmed maximum output current. | 03-04-2010 |
20100176786 | CONSTANT CURRENT CIRCUIT - A constant current circuit in which the gradient of the temperature characteristic of a constant current which is output by the circuit includes a current source ( | 07-15-2010 |
20100264899 | SEMICONDUCTOR DEVICE GENERATING VOLTAGE FOR TEMPERATURE COMPENSATION - An input transistor unit includes a first transistor having a control electrode to which a reference voltage is supplied. An output transistor unit includes a diode-connected second transistor. At least one of the input transistor unit and the output transistor unit further includes a third transistor that is diode-connected and connected in series with the corresponding first transistor or the second transistor and outputs a current in the same direction as the corresponding transistor does. The number of transistors included in the input transistor unit and the number of transistors included in output transistor unit are different from each other. The size of transistors included in the input transistor unit differs from that of transistors included in the output transistor unit. | 10-21-2010 |
20110121813 | CIRCUIT DEVICE, ELECTRONIC APPARATUS, AND POWER SUPPLY METHOD - A circuit device includes: a power supply circuit; and a logic circuit, the power supply circuit supplying a first power supply voltage and a second power supply voltage to the logic circuit, the first power supply voltage supplied by the power supply circuit periodically changing with a first reference voltage as a reference voltage, the second power supply voltage supplied by the power supply circuit periodically changing with a second reference voltage as a reference voltage, the power supply circuit supplying, due to resonance, the first power supply voltage and the second power supply voltage that repeat a first period during which a voltage difference between the first power supply voltage and the second power supply voltage is decreasing and a second period during which the voltage difference is increasing, and the logic circuit performing adiabatic circuit operation with the supply of the first and the second power supply voltage. | 05-26-2011 |
20110316518 | Voltage Regulator and Control Circuit and Method Therefor - The present invention discloses a voltage regulator, and a control circuit and a control method therefor. The method for controlling a voltage regulator comprises: receiving a dynamic voltage identification signal which instructs the voltage regulator to change its output voltage to a target voltage, and generating a compensation signal to shorten an interval for the output voltage of the voltage regulator to reach the target voltage. | 12-29-2011 |
20120274307 | VOLTAGE REGULATOR WITH DIFFERENT INVERTING GAIN STAGES - A voltage regulator includes a regulating transistor and a control circuit. The regulating transistor has a first current electrode for providing a regulated voltage, a second current electrode, and a control electrode. The control circuit has an output coupled to the control electrode of the regulating transistor, and an input coupled to the first current electrode of the regulating transistor. The control circuit includes a first inverting gain stage having a first load element, and a second inverting gain stage having a second load element. One of the first or second load elements is characterized as being a diode and the other of the first or second load elements is biased by a bias circuit. | 11-01-2012 |
20130271107 | VOLTAGE REGULATOR WITH BY-PASS CAPABILITY FOR TEST PURPOSES - A Voltage regulator includes a first input terminal configured to receive an input supply voltage, includes a second input terminal configured to receive a regulated output supply voltage as a function of the input supply voltage or to receive a test supply voltage and comprises a power transistor including an input terminal configured to receive the input supply voltage and including an output terminal configured to generate the regulated output supply voltage. The Voltage regulator is configured, during a start-up phase of a test operation mode, to receive a control signal equal to the input supply voltage, is configured to receive the input supply voltage having a substantially increasing trend, detect that the input supply voltage is equal to a first voltage threshold and generate, as a function of the detected signal and of the control signal, a by-pass signal having a transition from a first logic value to a second logic value for indicating a by-pass status of the Voltage regulator, and is configured to receive the by-pass signal having the second logic value and open the power transistor. The second input terminal is configured, during the test operation mode, to receive the test supply voltage having a test value different from a nominal value of the regulated output supply voltage. | 10-17-2013 |
20130285638 | WAKE-UP CIRCUIT AND ELECTRONIC DEVICE - A wake-up circuit used in an electronic device, the electronic device comprising a power supply and a load. The wake-up circuit includes a receiving unit receiving a wake-up signal, a control unit continuously generating an enable signal for a first predetermined time period when the receiving unit receives the wake-up signal, a voltage converter, and a processing unit. The power supply provides a secondary voltage to the voltage converter when the electronic device is in the standby state; the voltage converter converts the secondary voltage to a working voltage in response to the enable signal. The processing unit is powered by the working voltage to generate the enable signal and output the enable signal to the voltage converter and generates a control signal when the processing unit determines that the wake-up signal is a power-on command, the control signal controls the power supply to power the load. | 10-31-2013 |
20130307519 | SWITCHING CIRCUIT AND ELECTRONIC DEVICE USING THE SAME - An electronic device comprises a power supply, a load, a switching module, a voltage converting module, and a control module. The switching module establishes an electrical connection between the power supply and the voltage converting module when the electronic device is powered on. The voltage converting module is powered on through the switching module and outputs a working voltage. The control module is thus powered on. When the electronic device is powered off, the switching module is turned off, the voltage converting module stops outputting the working voltage, and the control module is disabled. | 11-21-2013 |
20140327425 | PORTABLE ELECTRONIC APPARATUS AND POWER MANAGEMENT METHOD THEREOF - A portable electronic apparatus and a power management method are provided. The portable electronic apparatus includes a power manager and a controller. The power manager is used to receive a supply power generated by a power adapter. The power manager determines whether to generate a detecting signal by detecting whether a voltage value variation of the supply power is greater than a preset range. The power manager generates a current detecting value according to an input current provided by the supply power. The controller receives the detecting signal and the current detecting value, and generates an input current limit value according to a receiving status of the detecting signal and the current detecting value. The power manager controls the input current according to the input current limit value. | 11-06-2014 |