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7997794 Temperature sensor circuit  
A temperature sensor circuit whose output voltage has high precision is provided. The temperature sensor circuit includes a Darlington circuit having bipolar transistors, a constant current...
7910949 Power semiconductor device  
A power semiconductor device includes a conductive board and a switching element mounted on the conductive board and electrically connected thereto. The power semiconductor device also includes an...
7880234 NPN Darlington ESD protection circuit  
An electrostatic discharge protection circuit includes a metal-oxide semiconductor transistor having a first terminal connected to an input end, and a gate connected to a supply voltage; a first...
7203050 NPN Darlington ESD protection circuit  
An electrostatic discharge protection (ESD) circuit includes an NPN Darlington circuit and an n-type metal oxide semiconductor (NMOS) transistor. The drain of NMOS transistor is connected to the...
7061303 Photoelectric leak current compensating circuit and optical signal circuit using same  
When a current mirror circuit is composed of transistors that inevitably form a parasitic photodiode between an epitaxial layer and a substrate layer because of structure of an integrated circuit,...
6940319 Device for controlling high and low levels of a voltage-controlled power switch  
A device for controlling a voltage-controlled switch, including two circuits respectively for setting to the high level and for setting to the low level a control terminal of the voltage-controlled...
6844759 Method and circuit for eliminating charge injection from transistor switches  
A method for reducing charge injection from a field effect transistor switch in a circuit being controlled by a timing signal having an operation cycle with at least a first phase and a second...
6603342 Light emitting element driver with low supply voltage  
A light emitting element driver composed of two transistors, one ground resistor, one inductance and a single capacitor is arranged to drive an LED with a supplied voltage as low as about 0.92 V....
6549061 Electrostatic discharge power clamp circuit  
An ESD clamping circuit arranged in a darlington configuration and constructed from SiGe or similar type material. The ESD clamping circuit includes additional level shifting circuitry in series...
6373320 Circuit configuration for operating point stabilization of a transistor  
A circuit configuration is provided for stabilizing an operating point of a first transistor having a base, a collector and an emitter connected to a first power supply. A second transistor has a...
6359517 Photodiode transimpedance circuit  
Disclosed is a front end circuit involving a transimpedance amplifier that drives a resistor, thereby lowering the input impedance of the circuit by dividing the feedback resistance by the gain of...
6271694 Monolithically integrated output stage  
A monolithically integrated output stage includes an arrangement for detecting the load current through a power switching transistor and/or an arrangement for detecting the output voltage at a...
6259292 Three-terminal inverting hysteretic transistor switch  
An inverting hysteretic transistor switch having an input terminal, an output terminal and a ground terminal includes, in some embodiments, a metal-oxide semiconductor field effect transistor...
6242967 Low on resistance high speed off switching device having unipolar transistors  
A semiconductor device is provided which includes a first unipolar transistor provided in a front stage of the device, second unipolar transistor provided in the front stage, and a bipolar...
6104230 Electronic inductor circuit using cascoded transistors  
An electronic inductor circuit comprises a pair of cascoded Darlington bipolar or MOSFET transistors, configured such that the impedance presented by the collector (drain) of the top transistor of...
5999036 Output circuit with output voltage controlled by current flow through an output transistor circuit  
An output circuit including an input inverting buffer circuit, and an output transistor circuit controlling a voltage of an output terminal by a current flowing therein. A control terminal of the...
5952864 Integratable circuit configuration for stabilizing the operating current of a transistor by negative feedback, being suitable in particular for battery-operated devices  
An integratable circuit configuration for stabilizing an operating point of a transistor by negative feedback includes first, second, third and fourth terminals. The fourth terminal is connected to...
5942920 Dual buffer peak detecting apparatus  
To solve a problem that, as the number of signal sources for outputting peak values decreases, a peak output voltage decreases, and to improve detecting precision, there are provided a plurality of...
5894237 Write driver with buffer circuits between pull-up resistors and upper drive transistors  
A write driver, having a pair of head pins for connection to a write head, includes two push-pull buffer circuits connected respectively between first and second pull-up resistors and the control...
5886570 Inverter circuit biased to limit the maximum drive current to a following stage and method  
An inverter circuit, suitably implemented in the feedback loop of a series pass regulator, limits the maximum drive current through an output drive transistor connected to control the regulator's...
5883542 Arrangement for reducing and stabilizing the amplification of a Darlington-coupled output stage  
In order to stabilize the idle current and the bandwidth of a Darlington-coupled output stage, the output stage is adapted, within an interval of currents, to continuously increase its current...
5859557 Method and apparatus for implementing DC mode selection in a data access arrangement  
A method and apparatus for implementing DC mode selection in a data access arrangement (DAA). The present invention overcomes the geographic constraints of the prior art by providing a plurality of...
5684427 Bipolar driver circuit including primary and pre-driver transistors  
A bipolar driver circuit includes a primary driver transistor and an independently controlled pre-driver transistor having an emitter connected to the base of the primary driver transistor and a...
5661431 Output circuit in Darlington configuration  
An output circuit has a bipolar transistor circuit of a 1st and a 2nd bipolar transistor connected in Darlington configuration. The base of the 1st transistor is supplied with an input signal. The...
5635865 Power driving circuit of a thin film transistor liquid crystal display  
A power driving circuit of a thin film transistor liquid crystal display includes Darlington circuits for generating voltages corresponding to the gate driving voltages required in the displays....
5631588 Power output stage with limited current absorption during high-impedance phase  
A power stage of quasi-complementary symmetry, including a common-source FET and a common-drain FET, with a reduced absorption of current under the conditions of high impedance of the output. The...
5631598 Frequency compensation for a low drop-out regulator  
A low drop-out voltage regulator is compensated by providing a compensation capacitor across an output terminal of the regulator and an output lead of an input stage which compares a reference...
5625312 Control circuit for semiconductor device  
A control circuit for an insulated-gate semiconductor device (IGBT) 1 has a drive circuit 2, which is a series circuit constructed of an npn transistor 3 and a pnp transistor 4, and controls the...
5616971 Power switching circuit  
A power switching circuit includes a power switching NPN transistor (1) having its collector electrode coupled to a reference potential terminal (17) and its emitter electrode coupled to an output...
5578950 Low voltage indicator with a self-biased driver circuit  
A low voltage indicator circuit including a self-biased driver circuit. A voltage at the output terminal is used to create a bias voltage to operate the driver when less than a threshold voltage is...
5546043 Circuit arrangement for driving an MOS field-effect transistor  
In order to drive an MOS field-effect transistor as a voltage interrupter in a DC/DC converter operating on the chopper principle, a suitable circuit arrangement has an input transistor (T1) for...
5541553 Amplifier with a function for switching on and off the output signal  
An amplifier which performs the function of switching on and off its output signal includes an inverted Darlington circuit made up of an input transistor and an output transistor, a first switching...
5532471 Optical transimpedance amplifier with high dynamic range  
A preamplifier for use with currents developed by a photodetecting diode is disclosed wherein the currents are coupled to the base of an NPN transistor connected as a common emitter stage and a...
5528192 Bi-mode circuit for driving an output load  
A bi-mode circuit for driving an output load selectively couples the output load to a supply voltage source or to a low discharge voltage source such as ground using switches which are controlled...
5489861 High power, edge controlled output buffer  
An output buffer circuit with edge-rate control capable of maintaining both rising and falling edge-rates within narrow specifications in the face of wide variations in load impedance. In...
5463345 Circuit for converting unipolar input to bipolar output  
The circuit for converting unipolar input to bipolar output includes a differential amplifier, first and second feedback resistors; and a peak detector. The negative output of the differential...
5424665 Power transistor driving circuit  
A driving circuit is provided for a power transistor connected to an inductive load. A detection resistor is placed between ground and the emitter of the power transistor. The driving circuit has a...
5424671 Power output stage having a darlington-pair circuit for switching an inductive load, especially the ignition coil of an internal-combustion engine  
A power output stage has a Darlington-pair circuit (11, 12) for switching an inductive load, especially the ignition coil of an internalcombustion engine. In order to predetermine the operating...
5418411 Voltage limiter for transistor circuit  
The invention relates to a voltage limiter for a transistor circuit with semiconductors (T20 and T21) in the arrangement of a plurality of successive amplifier stages, with a reference element...
5404051 Totem-pole load driving circuit with potential rise characteristics control  
A transistor load driving circuit characterized in that fast charge/discharge driving can be realized for a capacitive load with variation made between a large load state and a small load state,...
5291069 Bipolar H write driver  
An improved driver design including a plurality of NPN bipolar driver transistors connected in an H configuration including at least one bipolar upper drive transistor. A novel circuit is included...
5255240 One stage word line decoder/driver with speed-up Darlington drive and adjustable pull down  
A word line decoder/driver has a Darlington circuit connected in parallel with word line driver transistors to provide rapid switching thereof. The Darlington circuit receives an input from decoder...
5227782 Hydrostatic interface unit  
An interface unit is provided for transmitting signals to and receiving signals from several transmitters. The interface unit includes a DC power supply, an active load, and a transmit/receive...
5122695 SCR control circuits  
A SCR (silicon controlled rectifier) control circuit using two pulses to turn-on and turn-off the SCR, the time of turn-on and turn-off being selectively controlled.
5111065 Diode driver circuit utilizing discrete-value DC current source  
A diode driver circuit has an adjustable, fixed-value current source and a variable offset current source for drawing a bias current through a laser diode. A Darlington pair buffer circuit isolates...
5045734 High power switch  
A power switch responsive to drive signals developed by a signal source includes driver and driven transistors connected in a Darlington configuration and a further transistor having a control...
4947055 Base drive circuit for Darlington-connected transistors  
Prior base drive circuits for Darlington-connected transistors have accomplished a significant increase in the rate at which such transistors can be turned off and on. However, such circuits have...
4945396 Semiconductor device having Darlington transistors  
A semiconductor device, CHARACTERIZED in that a Darlington transistor in which in one surface of a semiconductor of a first conductivity type, base regions of a second conductivity type, the number...
4931666 Darlington-connected semiconductor device  
A Darlington-connected transistor circuit includes a drive stage transistor and an output stage transistor embodied in a semiconductor substrate having first and second elements in which the drive...
4902921 Drive circuit for driving cascode bipolar-MOS circuit  
The drive circuit for driving a cascode bipolar MOS circuit (1) has a bipolar transistor (21) coupled to a bipolar transistor (11) in the bipolar MOS circuit (1) through a Darlington connection. A...
Matches 1 - 50 out of 164 1 2 3 4 >