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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7760005 | Power electronic module including desaturation detection diode A power electronic module includes: a switch module including a desaturation detection diode and a power semiconductor switch, and wherein the desaturation detection diode is coupled to a switching connection of the power semiconductor switch; and a driver module co... | 07/20/2010 |
| 7724065 | Desaturation circuit for an IGBT A desaturation circuit for an IGBT is disclosed. In one embodiment, flooding of the component with charge carriers is reduced before the IGBT is turned off. ... | 05/25/2010 |
| 7365452 | Sensor device and output characteristic switching method of sensor device A pressure sensor device (1) includes a sensing element (2) for sending an analog signal according to pressure. The pressure sensor device (1) outputs the analog voltage to a microcomputer (20) through an input-output terminal (8).... | 04/29/2008 |
| 7342448 | Power output stage A class D power output stage for switching a supply voltage comprises a limiting transistor with a controllable path and a control terminal, a complementary limiting transistor with a controllable path and a control terminal, a switching transistor with a controllab... | 03/11/2008 |
| 7242238 | Drive circuit for voltage driven type semiconductor element A drive circuit for a voltage driven type semiconductor element, includes: an electrical charge discharge unit that discharges electrical charge from a gate terminal of a voltage driven type semiconductor element when the voltage driven type semiconductor element is... | 07/10/2007 |
| 7205822 | Control circuit for an inductive load driver A control circuit for an inductive load driver includes a control block activated by a trigger signal and an output coupled to the control terminal of a power element. The control circuit includes an auxiliary current generator capable of delivering a current that i... | 04/17/2007 |
| 7109780 | Control circuit for semiconductor component Control circuit for an IGB transistor, which comprises means (T1, V1, C3, C4) for generating auxiliary voltage, a first and a second controllable control switches (V8) connected in series between the auxiliary voltage, and a gate r... | 09/19/2006 |
| 7005910 | Feed-forward circuit for reducing delay through an input buffer An invention is provided for a feed forward circuit that reduces delay through an inverting circuit. The feed forward circuit includes an inverter having an input and an output, and an inverting circuit having an input and an output. The input of the inverting circu... | 02/28/2006 |
| 6975157 | Starter device for normally off JFETs A semiconductor switching device or amplifier combined in parallel with one or more active devices defined as starter devices. A starter device is used to reduce the terminal voltage of a switching device or amplifier to a dc level below about 0.4 volts which will t... | 12/13/2005 |
| 6809386 | Cascode I/O driver with improved ESD operation A cascode I/O driver is described that includes a barrier formed in the shared region between the two transistors. The barrier region allows the I/O driver to be designed to primarily meet I/O requirements. Accordingly, improved operating speeds are achieved. An sys... | 10/26/2004 |
| 6798678 | Frequency voltage converter There is provided a frequency voltage converter comprises a first transmission line for transmitting an input signal and a second transmission line provided with a delay line circuit, a third transmission line for transmitting a reference signal and a fourth transmi... | 09/28/2004 |
| 6614289 | Starter device for normally off FETs A semiconductor switching device or amplifier combined in parallel with one or more active devices defined as starter devices. A starter device is used to reduce the terminal voltage of a switching device or amplifier to a dc level below about 0.4 volts w... | 09/02/2003 |
| 6597231 | Semiconductor switching circuit and semiconductor device using same The present invention provides a semiconductor switching circuit and a semiconductor device using the switching circuit that can maintain sufficient isolation characteristics even when dealing with high frequency signals. The semiconductor switching circu... | 07/22/2003 |
| 6580308 | VDS protection for high voltage swing applications The invention provides apparatus, methods and systems for providing voltage protection at the drain-to-source path of an output transistor. The invention discloses circuit apparatus and system giving excess voltage protection in a circuit having a voltage... | 06/17/2003 |
| 6580625 | Power supply circuit for driving power transistor There are included a switching circuit for flowing pulse electrical current through a primary winding of a transformer, a half wave rectification circuit or a full wave rectification circuit for extracting electrical current from a secondary winding of th... | 06/17/2003 |
| 6476661 | Precise control of VCE in close to saturation conditions A pull-down circuit uses an npn transistor operating at close to saturation and the collector/emitter voltage is used as the pull-down voltage. To keep this within strict limits the npn transistor is connected in circuit with other transistors and resisto... | 11/05/2002 |
| 6448838 | Circuit and method for high-speed break-before-make electronic switch In a switching circuit, a first electrical element (22) is disabled before a second electrical element (30) is enabled. The switching operation is called break before make and ensures that disabling operation of a first electrical element occurs before en... | 09/10/2002 |
| 6204715 | Signal amplifying circuit Circuitry for amplifying a single-ended analog sensor output includes a field effect transistor (FET) having a gate connected to a first end of a capacitor, the second opposite end of which is connectable to the sensor output. The gate of the FET is also ... | 03/20/2001 |
| 6104170 | Method and circuit for preventing oscillations in a battery charger Method and circuitry for clamping outputs of inactive error amplifiers in battery chargers eliminate delays and prevent oscillatory tendencies. By clamping the output of, for example, an inactive current loop amplifier in response to the output of an acti... | 08/15/2000 |
| 6054890 | Electronic switching circuit with reduction of switching transients Electronic circuit including an electronic power switch, for example an IGBT, controlled at its own gate terminal by resistive means in order to reduce its switching speed. The circuit includes a voltage sensor for reading a measurement that is a function... | 04/25/2000 |
| 6043701 | Circuit configuration for protecting a power MOSFET A circuit configuration for protecting a MOSFET against overvoltages, includes at least one diode connected in the blocking direction between a drain terminal and a gate terminal of the MOSFET to be protected. A series connection of a load path of a furth... | 03/28/2000 |
| 6037826 | Control of saturation of integrated bipolar transistors Saturation of a bipolar power transistor is controlled by sensing the current which is eventually injected into the substrate of the integrated circuit by the saturating transistor and using this signal for exerting a limiting action on the current which ... | 03/14/2000 |
| 5936453 | Circuit arrangement for controlling a pulse output stage A specification is given of a circuit arrangement for controlling a pulse output stage, which comprises a MOS-FET power stage and a controller stage. The controller circuit (5) is connected to the drain of the MOS-FET (1) as the sole voltage supply, and t... | 08/10/1999 |
| 5850158 | Actively regulated totem pole TTL output stage An all npn totem pole TTL output stage is provided with an active regulation circuit that continuously senses the voltage level at the output terminal and feeds it back to control the drive signal that is applied to the base of the bottom output transisto... | 12/15/1998 |
| 5808503 | Input signal processing circuit An input signal processing circuit which prevents saturation of the input transistor. It has an input npn transistor QN1, a transistor QP1, the emitters of which are connected to the cathode terminal TCTD, and the collectors of which are connec... | 09/15/1998 |
| 5659261 | Analog-to-digital converter and output driver The A-to-D converter 300 has an output buffer 320 with fourteen drivers each the same as driver 4100. Driver 4100 includes bipolar pull up pull down transistors 4102, 4103. Those transistors are both coupled to an output. Pull up transistor 4102 is couple... | 08/19/1997 |
| 5559451 | Bicmos push-pull type logic apparatus with voltage clamp circuit and clamp releasing circuit In a push-pull type logic apparatus including a push-pull buffer formed by two bipolar transistors, a control circuit for turning ON one of the bipolar transistors and turning OFF the other, and a voltage clamp circuit for clamping the voltage of the base... | 09/24/1996 |
| 5546045 | Rail to rail operational amplifier output stage An integrated circuit output stage is intended for use with an operational amplifier. The output is capable of driving capacitive load to within a VSAT of the power supply rails. The complementary output transistors are driven by way of a combi... | 08/13/1996 |
| 5539350 | Common mode logic line driver switching stage A line driver switching stage includes a terminal for a reference potential, a terminal for a supply potential, and an output terminal of the line driver switching stage. A differential amplifier has a first and a second amplifier branch. The first amplif... | 07/23/1996 |
| 5528189 | Noise performance of amplifiers In one form of the invention, a circuit is disclosed, the circuit comprising: a transistor Q having an input terminal 14 with an avalanche breakdown voltage to electrical ground; and one or more diodes 16 arranged in a series between the input terminal 14... | 06/18/1996 |
| 5510746 | Load circuit tolerating large current and voltage swings A load circuit which can tolerates large current and voltage swings before saturation begins includes a field effect transistor having a source coupled to a power supply, a drain coupled to an input terminal which receives signals from a memory circuit da... | 04/23/1996 |
| 5481216 | Transistor drive circuit with shunt transistor saturation control A drive transistor has its base coupled to a circuit input and its collector coupled to provide an output current at a circuit output. The output current is responsive to a base current received at the base of the drive transistor. A voltage induced acros... | 01/02/1996 |
| 5477185 | IC amplifier with saturation detection An integrated circuit which includes a detection circuit for detecting the condition of saturation of an output transistor (Q0) whose collector-emitter path is intended to pass an output current. A threshold circuit (A) of the detection circuit... | 12/19/1995 |
| 5457433 | Low-power inverter for crystal oscillator buffer or the like A low-power inverter (53) reduces power consumption over known inverter designs and is especially well-adapted for serving as a buffer in a Pierce crystal oscillator with a large load capacitance. The inverter (53) includes P- and N-side source-follower s... | 10/10/1995 |
| 5444395 | Non-saturating bipolar transistor circuit A non-saturating transistor circuit (11) having a first terminal (13), a control terminal (12), and a second terminal (14). The first terminal (13), control terminal (12), and second terminal (14) correspond respectively to a collector, base, and emitter ... | 08/22/1995 |
| 5418386 | Circuit construction for controlling saturation of a transistor An integrated circuit including a semiconductor substrate, a semiconductor layer formed on the substrate, a desired bipolar transistor formed in the semiconductor layer. First and second parasitic elements are formed in the integrated circuit. An element ... | 05/23/1995 |
| 5278461 | Integrated transistor circuit The invention relates to an integrated transistor circuit comprising a transistor (Q1) of which the collector is connected to an input of a circuit (S) and between the base and collector of which an antisaturation diode (D1) is connected. According to the... | 01/11/1994 |
| 5047656 | Continuous duty circuitry for high speed switching of current from a constant current source A high speed current switch circuit comprises two sets of transistors, with each set containing a transconductance multiplier pair. These transistor sets alternate in operation to steer the current from a continuous-output constant current source either t... | 09/10/1991 |
| 5036218 | Antisaturation circuit An antisaturation circuit comprising a differential input pair monitors the collector-base voltage of a protected transistor to detect the condition prior to the protected transistor going into saturation mode. To prevent the protected transistor from ope... | 07/30/1991 |
| 5036233 | Integrated semiconductor circuit having a unidirectional semiconductor component for preventing saturation of bipolar transistors In digital circuit technology, bipolar transistors are advantageously used for switching thanks to their high mutual conductance. Since a transistor operated in the saturation state has a retarded switching behavior, saturation must be avoided for rapid s... | 07/30/1991 |
