Class 327/304 - With inductive device (e.g., transformer, etc.)

Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter which includes an element which has the property
No. of patents: 69
Last issue date: 03/13/2012

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Number	Title	Issue Date
8134398	Device having gate with two buried portions with different widths A dummy transistor and a field effect transistor are arranged in a second direction. The dummy transistor is located at least at one end in a second direction. ...	03/13/2012
7355515	Magnetic security device for securing doors A lock position detection device includes a door locking mechanism, a magnetic field sensor such as a reed switch and a wireless transmitter. A magnet enters proximity of the sensor when the actuator is operated to one position and causes the sensor to output a firs...	04/08/2008
7287947	Front loading trailer and method of use A trailer for hauling heavy equipment includes front end loading assembly that allows hitching and loading, a trailer bed, and a set of rear wheels. Longitudinally aligned support beams from the trailer bed, ends terminating at the front end loading assembly. The fr...	10/30/2007
7288990	Reference buffer with dynamic current control A method can allow a system to selectively control increasing of a bias source in a reference buffer or decreasing impedance looking into a output of the reference buffer for a temporary or selective time period, which can result in an increased overall efficiency o...	10/30/2007
7248994	Digital method and apparatus for sensing position with a linear variable differential transformer An apparatus and method for determining a linear position from a linear variable differential transformer (LVDT) including a primary coil driven by an excitation signal, and two secondary coils coupled to two correlated signals. The method includes converting the co...	07/24/2007
7198227	Aircraft cargo locating system An aircraft cargo locating system determines the location and weight of aircraft cargo placed in unit loading devices. A wireless tag, such as an Radio Frequency Identification (RFID) tag is affixed to each of the loading devices. The system receives information fro...	04/03/2007
7102860	Power limiting time delay circuit A power limiting circuit for power supply that is controlled by a power supply control module includes a shunt regulator having a reference input operatively connected to a voltage input that receives a voltage representative of the power supply control module conne...	09/05/2006
7098735	Reference buffer with dynamic current control A method can allow a system to selectively control increasing of a bias source in a reference buffer or decreasing impedance looking into a output of the reference buffer for a temporary or selective time period, which can result in an increased overall efficiency o...	08/29/2006
7075347	Multiphase resonant pulse generators A multiphase resonant pulse generator (74) has N groups of N-1 switches (44,46,48) which, when activated, form N paths from a power supply (Vdc) to ground or a reference voltage. Here N is a positive integer greater than 2. Each of the paths inc...	07/11/2006
6927616	Integrated circuit and method for interfacing two voltage domains using a transformer An integrated circuit designed to reduce on-chip noise coupling. In one embodiment, circuit (60) includes the following: a circuit transformer (62) capable of converting a noise sensitive input reference clock signal to an output signal having a voltag...	08/09/2005
6917226	Transformer coupling arrangement and method using a plurality of drivers A signal is coupled from the primary to the secondary of a transformer, to a signal receiver which has a supply voltage derived from the signal via a rectifier arrangement including a filter capacitor. A plurality of signal drivers on the primary side have their out...	07/12/2005
6911746	Signal and power transformer coupling arrangements An isolating coupling arrangement couples signals in both directions via a transformer between first and second (or more) units each having differential signal transmit buffers and receivers. A diode bridge and capacitor produce an isolated power supply voltage for ...	06/28/2005
6734715	Two terminal rectifier using normally off JFET A two terminal semiconductor circuit that can be used to replace the semiconductor diodes used as rectifiers in conventional DC power supply circuits. Three semiconductor circuits that can efficiently supply the DC currents required in both discrete and integrated c...	05/11/2004
6650163	Clock generator for integrated circuit A system and integrated circuit (die) including a clock generator that includes an on-chip inductor and uses the inherent capacitance of the load to generate a sinusoidal clock signal. The inductor is connected between a current source and an inverting sw...	11/18/2003
6627879	Voltage pulser circuit One illustrative embodiment of a voltage pulser circuit comprises a voltage source producing a first voltage, and a thyratron tube having an anode coupled to the output of the voltage source, a cathode connected to a reference potential and a grid respons...	09/30/2003
6566936	Two terminal rectifier normally OFF JFET A two terminal semiconductor circuit that can be used to replace the semiconductor diodes used as rectifiers in conventional DC power supply circuits. Three semiconductor circuits that can efficiently supply the DC currents required in both discrete and i...	05/20/2003
6285231	Reference buffer technique for high speed switched capacitor circuits A low power reference buffer includes a new amplifier design with very large transconductance and high frequency non-dominant poles and a triple bonding scheme to a large off-chip capacitor that avoids the problems related to the lead wire inductance....	09/04/2001
6229356	Stabilized gate drivers A stabilized gate driver which comprises a current source transformer (T) which comprises a primary and a secondary coil, and a gate driver unit (GD) which includes a positive auxiliary voltage input (Va+) and a negative auxiliary voltage input (Va-). The...	05/08/2001
6107860	High efficiency floating gate driver circuit using leakage-inductance transformer A gate driver for turning on and turning off a power switching device having a capacitive gate control input provides galvanic isolation between low-level control circuitry and the power switching device by means of a transformer having a controlled amoun...	08/22/2000
6054886	Reference buffer technique for high speed switched capacitor circuits A low power reference buffer includes a new amplifier design with very large transconductance and high frequency non-dominant poles and a triple bonding scheme to a large off-chip capacitor that avoids the problems related to the lead wire inductance....	04/25/2000
6008681	Method and apparatus for deriving power from a clock signal coupled through a transformer A transformer driver circuit connected to the primary or "system" side of a transformer has a system clock connected to an input thereof the system clock having a frequency selected to constitute the desired clock frequency of a CODEC circuit located on t...	12/28/1999
5812012	High efficiency resonant network drive for an infrared LED A high efficiency resonant impedance transforming network for driving a high efficiency infrared LED and the associated method for decreasing the rise time and fall time of the LED to enable the LED to operate at higher frequencies than would ordinarily b...	09/22/1998
5808495	Magnetron driving circuit According to the present invention, to drive a magnetron, a pulse voltage is applied to the gate electrode of a field effect transistor to make the field effect transistor conductive, so that a voltage stored in a storage condenser is discharged through t...	09/15/1998
5789959	Circuit configuration for direct voltage and alternating voltage decoupling Direct voltage and alternating voltage signals are decoupled from a first and a second pair of leads. The pairs of leads each carry an alternating voltage signal and they are subject to a direct voltage between them. A capacitive connection of the leads w...	08/04/1998
5760619	Piezoelectric transformer driver circuit A piezoelectric transformer driver circuit can employ low voltage transistors. By alternately turning ON and OFF switching transistors b 3 and 4 depending upon gate signals GA and GB, a primary side of a piezoelectric transformer 7 is driven, and a second...	06/02/1998
5736884	Device for generating a control signal dependent on a variable resistance value and apparatus comprising such device A device for generating a control signal voltage which is dependent on a resistance value of a variable resistor (8) includes a transformer (24) having a first winding (22) which is in series with the variable resistor and a rectifier diode (20). A curren...	04/07/1998
5734285	Electronic circuit utilizing resonance technique to drive clock inputs of function circuitry for saving power An electronic circuit uses a resonance technique to reduce power consumption. The circuit contains function circuitry (14) that performs electronic functions. Certain elements (14F) of the function circuitry change state at a circuit frequency in response...	03/31/1998
5708377	Low power dual sampler utilizing step recovery diodes (SRDS) A low power dual sampler including two sampler switches with a step recovery diode (SRD) in each sampler switch. A local oscillator (LO) signal is provided through a power amplifier and transformer to baluns in the sampler switches without utilizing a pow...	01/13/1998
5627482	Electronic digital clock distribution system More particularly, an electronic digital clock distribution system provides a plurality of working rank clock signals to respective ones of a plurality of logic circuits. Each clock signal has a predetermined frequency and each logic circuit requires a wo...	05/06/1997
5594378	Fast high voltage modulator circuit A fast, high voltage modulator circuit (10) has a drive circuit (12) apply input pulses to an on-section (88) and an off-section (90). The on-section (88) and off-section (90) having a common output (46). A pair of transformers (18,24) connects the drive ...	01/14/1997
5587680	Pulse generator with charge pump A current pulse generator for generating current pulses on a conductor of controllable magnitude and duration based on a controlled pulse former. This pulse former is controlled by a controller in communication with a current sensor and operating a magnit...	12/24/1996
5559478	Highly efficient, complementary, resonant pulse generation A power source, inductor and clamping device coupled to generate substantially sinusoidal drive pulses. The power source has an output capacitance. The inductor is connected to the power source and to the load to be driven. In combination with the inducto...	09/24/1996
5554948	Adaptive threshold circuit with deceleration compensation An adaptive threshold circuit for use with a magnetic type of sensor that has a pick-up coil. The pick-up coil has an alternating voltage induced therein when a slot or tooth formed in a wheel rotates past the sensor. The circuit produces a square wave pu...	09/10/1996
5550498	Method and apparatus for charge pulse-width modulation control A charge mode pulse-width modulation control method and apparatus includes setting up a detector at a primary side of a transformer to detect a current and feeding back the detected current to a current apparatus to provide a current output; an integrator...	08/27/1996
5532631	Active pull-down write driver for three-terminal inductive load A write driver for a magnetic transducer having a three-terminal inductive coil includes first and second voltage sources, a write current source, and a switching network having first and second switching transistors connected between the second voltage s...	07/02/1996
5530396	Damped EMI input filter power factor correction circuits An active damping circuit for an electromagnetic interference (EMI) filter for power factor correction (PFC) circuit is provided which simulates a line damping impedance which actively varies according to sensed line current. The active damping circuit co...	06/25/1996
5530385	Control circuit for a semiconductor switch The invention relates to a control circuit for a semiconductor switch, comprising a transformer coupling (T1, T2) for generating AC voltage signals including both control energy and control information, a rectification coupling (DB1, DB2) for rectifying t...	06/25/1996
5430595	Electrostatic discharge protection circuit A device for protecting an integrated circuit (IC) against electrostatic discharge (ESD) includes a self-triggered silicon controlled rectifier (STSCR) coupled across the internal supply potentials of the integrated circuit. The STSCR exhibits a snap-back...	07/04/1995
5391998	Modulator for efficiently generating short high voltage repetitive pulses A modulator for producing repetitive short high voltage pulses is provided. The modulator includes a high voltage power supply, a plurality of pulse forming networks each capable of being charged to a potential equal to twice the voltage of the high volta...	02/21/1995
5138270	High voltage pulse generator A high voltage pulse generator circuit is connected to a pulse electromagnet and a Blumlein charge circuit comprising a pair of coaxial cables or charge lines connected in parallel and each having an impedance of Z/2 is connected in series to a transmissi...	08/11/1992

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Class 327/304 - With inductive device (e.g., transformer, etc.)