Class 323/229 - Using diode

Subclass of Class 323 - Electricity: power supply or regulation systems
Definition: Subject matter wherein the final control device within the
No. of patents: 29
Last issue date: 05/17/2011

Number	Title	Issue Date
7944190	Control circuit of power supply unit which controls output power of external power supply based upon current from the external power supply, power supply unit and control method thereof The control circuit 30 of power supply unit and power supply unit 10 controlling output power with electric power supplied from the external power 15, comprise a monitoring portion 40 monitoring current I1 and voltage outputted fro...	05/17/2011
7880450	Switching power supply, control circuit controlling switching power supply and control method of switching power supply A switching power supply includes: a first switch provided between one end of a DC power supply and one end of a load; a second switch provided between a node of the first switch located on a load side and another end of the DC power supply; a capacitor provided bet...	02/01/2011
7876075	Control circuit and method for a power converter A control circuit and control method for a power converter detects change of the output voltage of the converter, and performs the time-optimal control function when the change exceeds the default value. According to the voltage slew rate detected at the time of the...	01/25/2011
7379312	High-voltage device having a measuring resistor A high-voltage device having a measuring resistor, also called a bleeder, is plunged into an electrical field whose voltage varies in the same way as the voltage along the bleeder. To achieve this, the capacitive elements are distributed in two rows, each row defini...	05/27/2008
7321224	DC-DC converter with clamping capacitor and output winding for reduced output voltage ripple A DC-DC converter is structured such that a main switching element has one terminal connected to one terminal of a DC power supply and has the other terminal connected to one terminal of a first winding of a resonance coil, a choke coil has one terminal connected to...	01/22/2008
7315135	Load driving device and load driving method Provided is a load driving device controlling a drive of a load including a driver for periodically turning on/off a current according to a switching clock signal and supplying a average driving current to the load. Further provided is a dimming controller for contr...	01/01/2008
7184731	Variable attenuator system and method A variable attenuator comprising a first attenuator for attenuating a RF signal according to a fixed voltage, a second attenuator connected in parallel to the first attenuator and attenuating the RF signal according to a control voltage for determining an attenuatio...	02/27/2007
7026799	Circuit assembly for operating a luminous signal The invention relates to a circuit assembly for operating a luminous signal, particularly an LED signal, comprising at least one light-emitting diode (D) to which a resistance (R) is serially connected and a control (St) is connected in parallel. In order to adjust ...	04/11/2006
6919774	Broadband PIN diode attenuator bias network Diode network configurations are disclosed in which cathode bias voltage is held substantially constant to provide an attenuator circuit in which return loss is optimized throughout a broad dynamic attenuation range. Preferred embodiments include PIN diodes arranged...	07/19/2005
6717830	MOS circuit for lowering forward voltage of diodes A circuit for lowering the effective voltage drop of a semi-conductor diode. The circuit includes a first Metal Oxide Semi-conductor (MOS) device connected in parallel with the diode. A bias voltage which is close to but lower than the threshold voltage is applied t...	04/06/2004
6040688	Electrical current supply device with incorporated electrical current sensor A current supply device for supplying a direct current, a sinusoidal current or a pulsed current to a load, the device having a conductor portion arranged for being connected in series with the load, the conductor portion being coupled with a magnetic cir...	03/21/2000
5990576	Power supply voltage supplying circuit The positive potential side output of a voltage source (1) is connected to the positive potential side of a first circuit (10) through a terminal (6); the ground (negative potential) side output of voltage source (1) is connected through a terminal (8) to...	11/23/1999
5930133	Rectifying device for achieving a high power efficiency A tunnel diode is used as a rectifying device. The tunnel diode is so implemented as to suppress a flow of a current relative to an applied forward voltage of AC which is greater than a voltage at a peak value of a tunnel current. Stated in another word, ...	07/27/1999
5554924	High speed shunt regulator A high speed shunt regulator comprises a DC current source, a DC voltage reference/current shunt circuit, and first and second Schottky diodes connected in series with each other between the DC current source and the DC voltage reference/current shunt cir...	09/10/1996
5446320	Circuit for clamping power output to ground while the computer is deactivated A circuit for connecting the power supply output of a computer to ground when the system is shut down to counter adverse effects of backfeed voltage which includes a MOSFET between the power supply output and ground. In one embodiment the MOSFET is switch...	08/29/1995
5426579	Method and apparatus for stabilizing AC power supply systems connected to power factor correcting loads Instabilities in the output voltage provided from an AC power supply system connected to a power factor correcting load are suppressed by a stabilizer which is connected across the output lines from the power supply system to the load. The stabilizing app...	06/20/1995
5260643	Programmable reference voltage generator A programmable reference voltage generator includes a diode arrangement for generating a reference voltage in response to a control current. An array of memory cells is provided for adjusting the control current, the memory cell array including a pluralit...	11/09/1993
5099191	Tunnel diode voltage reference circuit A tunnel diode voltage reference circuit includes a tunnel diode; bias voltage circuit for biasing the tunnel diode to operate in the region of the peak current where the tunnel diode output current variation is a fraction of the bias voltage variation; a...	03/24/1992
5014214	Use of diodes in an input circuit to take advantage of an active pull-down network provided in a dual regulator The use of the input protection diodes in a microcomputer unit based control system in conjunction with a diode input circuit and an active pull-down network provided by a switched voltage regulator to protect the microcomputer unit from damage due to hig...	05/07/1991
4948989	Radiation-hardened temperature-compensated voltage reference A radiation-hardened temperature-compensated precision voltage reference includes two diodes connected in series having a prescribed operating current (IB) flowing therethrough. In one embodiment, a first of the two diodes comprises a reversed-...	08/14/1990
4814686	FET reference voltage generator which is impervious to input voltage fluctuations A reference d.c. voltage generator is disclosed which includes a series circuit for first and second field effect transistors or FETs. The first FET serves as a high-impedance constant current supply, while the second FET functions as a resistor for gener...	03/21/1989
4686451	GaAs voltage reference generator In a GaAs integrated circuit, a voltage reference generator includes a pair of Schottky diodes and a first, current-source connected, depletion-mode MESFET coupled in series to conduct current from a ground node to a voltage supply node. The current-sourc...	08/11/1987
4673864	Circuit comprising series-connected semiconductor elements A plurality of controlled avalanche semiconductor elements, are connected in series and are irradiated with a controllable quantity of light to form circuits which in principle can switch an unlimited high voltage or can control such a voltage. Dissipatin...	06/16/1987
4590417	Voltage controlled diode attenuator A voltage controlled diode attenuator has no coils and, therefore, may be built in integrated circuit form. At least one pair of similarly poled diodes and a resistor are connected in a series circuit. An input signal and variable control voltage are appl...	05/20/1986
4492914	Temperature-compensating bias circuit A temperature-compensating bias circuit for biasing a transistor circuit such as a multivibrator is disclosed. In the bias circuit, a series circuit formed of a first resistor and a parallel circuit consisting of a first circuit includes a second resistor...	01/08/1985
4378521	Active zener diode substitute circuit A circuit which performs regulator or limiter functions at current and voltage levels below the operating ranges of conventional zener diodes. The output of an op amp is connected through a diode to a main input terminal which may be connected between a p...	03/29/1983
4352053	Temperature compensating voltage generator circuit A temperature compensating voltage generator circuit for compensating temperature characteristics of an electric circuit whose electrical characteristic varies in accordance with the change of the ambient temperature and whose electrical characteristic ca...	09/28/1982
4321524	Transistorized voltage limiter The invention relates to a transistorized voltage limiter as a dipole having in the conduction direction the characteristic similar to that of the Zener diode. When low voltage is involved, this transistorized voltage limiter can replace the Zener diode i...	03/23/1982
4292592	Pulsed power supply system A square wave clock signal is coupled to a transistor, the output of which is transformer coupled to the base of a driver transistor. The conducting of the driver transistor will cause an increase in the current through the primary of a flyback transforme...	09/29/1981

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Class 323/229 - Using diode