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5578960 |
Direct-current stabilizer
A direct-current stabilizer includes an n-p-n transistor as a control transistor, and a control terminal to which a control voltage for driving the control transistor is applied. The value of the...
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5568081 |
Variable slew control for output buffers
A variable slew control for output circuits is disclosed. The slew control circuit automatically adjusts the rate in which voltage on a slew node is driven to a reference voltage, minimizing noise...
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5563532 |
Double filtering glitch eater for elimination of noise from signals on a SCSI bus
A glitch filter for eliminating noise pulses less than 12 nanoseconds (ns) created by large devices on the SCSI bus and reflections of the 12 ns pulses created by a long SCSI bus cable, as well as...
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5545934 |
Voltage clamp circuit
A clamping circuit for clamping a circuit node during an initial circuit powerup interval includes a switching circuit and a switching control circuit. The switching circuit is an N-MOSFET with its...
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5543739 |
Control, reduction and equalization of delays in a driver stage
The turn-off delay time of a low-side driver (output power transistor), may be independently reduced and eventually made identical to the turn-on delay time by employing an auxiliary current...
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5543750 |
Bootstrap circuit
An improved bootstrap circuit comprising a booster for boosting a binary signal and outputting the boosted binary signal through its output terminal, a voltage detector for detecting a variation of...
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5541540 |
MOS half-bridge drive circuit, particularly for power MOS half-bridges
A drive circuit includes a voltage source supplying a reference voltage at its output; a voltage elevating circuit connected to a supply voltage and to the output of the voltage source, and...
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5525922 |
Automatic gain and level control circuit and method
An automatic gain and level control output circuit. The inventive circuit (10) includes a first component (12) for multiplying an input signal by a first reference signal to provide a gain adjusted...
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5524266 |
System having multiple phase boosted charge pump with a plurality of stages
An integrated circuit charge pump circuit including a plurality of stages, each stage including a first N type field effect switching transistor device having source and drain terminals connected...
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5519350 |
Circuitry for delivering a signal to different load elements located in an electronic system
In an electronic system such as an integrated circuit having a number of destination loads such as logic gates, signal is distributed along typically a zero'th level (e.g., polysilicon) electrical...
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5517141 |
Differential high speed track and hold amplifier
A differential track and hold amplifier circuit (200) is provided. The track and hold amplifier includes an input transconductance amplifier (212), an output amplifier (111), and a second...
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5498991 |
Level shifter circuit
A level shifter includes an N-channel enhancement-mode field effect transistor (40), a P-channel depletion-mode field effect transistor (38), and a current mirror (42) coupled to the source of the...
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5491445 |
Booster power converter having accelerated transient boost response
A booster power converter particularly suited for an automobile and having a compensation network that responds to a sudden negative input voltage excursion. The booster power converter responds to...
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5488258 |
Circuit for muting noises in a power amplifier
A power detector is provided for detecting closing of a power switch in a power supply, for producing a power-on signal after a predetermined time from detection of the closing of the power switch....
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5486785 |
CMOS level shifter with feedforward control to prevent latching in a wrong logic state
A level shift circuit provided with feedforward control to keep the circuit from latching in a wrong logic state comprises a pair of input transistors acted as a differential amplifier and a pair...
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5483191 |
Apparatus for biasing a FET with a single voltage supply
Embodiments of the present invention bias a field effect transistor with only a single voltage source and generally do not have the disadvantages of traditional "floated source" bias techniques....
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5477183 |
Automatic gain and level control circuit and method
An automatic gain and level control method and circuit. In general, the inventive method includes the steps of detecting the DC level of a signal and providing a first signal in response thereto...
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5473279 |
Integrated compander amplifier circuit with digitally controlled gain
An integrate circuit companding amplifier for analog signals with digitally controlled gain. The expansion amplifier uses a square law with presentation of sign and the compression amplifier uses...
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5469110 |
Charge pumping circuit using non-overlapping clock control
A charge pumping circuit generates a negative voltage equal in magnitude to the positive supply voltage. A non-overlapping clock is used to set the voltage across a first capacitor equal to the...
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5459425 |
Signal processing circuit with voltage limiting function
A signal processing circuit for limiting a signal voltage generated, for example, across a signal source coil 1 within a range between a predetermined upper limit and a predetermined lower limit,...
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5457422 |
Device for biasing an RF device operating in quasi-linear modes with voltage compensation
A biasing device for actively biasing the base of an RF device operating in quasi-linear modes. The biasing device provides a source of low-impedance current and high current capability. The...
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5457421 |
Voltage stepdown circuit including a voltage divider
A voltage step-down circuit to be built in a highly integrated semiconductor IC chip, including a voltage divider and a voltage comparator. A divided output voltage V INT of the voltage divider...
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5455532 |
3V to 5V receiver/translator using a 5V supply and a 3V reference
A circuit that translates one voltage level to another voltage level. In one embodiment of the invention, an input buffer translates a 3 volt level to a 5 volt level. Such an input buffer...
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RE35041 |
Inductance and capacitance charge pump circuit for driving power MOS transistor bridges
The circuit comprises a tank capacitance and a charge circuit supplied with the same voltage as the bridge and comprising an inductance and a control transistor. There is also provided a control...
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5451896 |
Semiconductor integrated circuit device with an internal voltage-down converter
A semiconductor integrated circuit device includes an aging mode control circuit, which detects the times of toggle of an external supply voltage (external Vcc) with a predetermined amplitude and...
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5442311 |
System and method for controlling a gain circuit
A circuit (12) for controlling the gain of a gain cell (14) is provided. Circuit (12) comprises a circuit (16) for generating a control current. A circuit (22) generates a reference voltage. A...
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5434536 |
Semiconductor emulation of vacuum tubes
A semiconductor emulation of a vacuum tube with one or more of the following characteristics: non-linear output, non-linear transfer, non-linear input, reverse transfer, and second harmonic...
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5432389 |
Gain stage circuit with automatic level control
A gain stage circuit having automatic level control is provided. In particular, the gain stage circuit provides an output voltage signal that is a predetermined multiple of the input voltage signal...
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5432469 |
Method and apparatus for a two phase bootstrap charge pump
An integrated circuit charge pump circuit including a plurality of stages, each stage including a first N type field effect switching transistor device having source and drain terminals connected...
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5422592 |
Input circuit of semiconductor integrated circuit device
Reliability related problems such as destruction of the insulation film and shortened operating life of the MOSFET are prevented in a case where the voltage of an input signal is larger than a...
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5422586 |
Apparatus for a two phase bootstrap charge pump
An integrated circuit charge pump circuit including a plurality of stages, each stage including a first N type field effect switching transistor device having source and drain terminals connected...
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5422585 |
Apparatus for generating an output signal of a desired pulse width
A apparatus for generating an output signal of a desired pulse width is disclosed. The apparatus comprises a flip-flop, a delay circuit and a clear circuit. The flip-flop, in response to a first...
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5420533 |
Pull-down circuit for wide voltage operation
A pull-down circuit for wide voltage operation including a ninth N-MOS transistor and a tenth N-MOS transistor each having a drain electrode connected to a data line and a source electrode...
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5414309 |
Circuit for applying direct current to winding
A circuit for applying a direct current to a winding. One end of a primary winding of a transformer is connected to a first transistor via a resistor. The other end of the primary winding is...
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5412331 |
Word line driving circuit of a semiconductor memory device
A word line driving circuit for use in a semiconductor memory device having a first supply voltage terminal to which a pumping voltage higher than a supply voltage supplied from the exterior of a...
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5412258 |
Integrated circuit testing device
An integrated circuit testing device, including a small test signal generator for generating a small test signal having a small amplitude corresponding to a test signal supplied to an input...
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5404113 |
High efficiency power amplifier
A high-efficiency amplifier (10, 18) that may be used in, for example, a radar system to amplify signals received at an exciter (22) before they are applied to an antenna (20). The amplifier...
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5402375 |
Voltage converter arrangement for a semiconductor memory
In a voltage converter provided in a semiconductor memory and supplying an internal supply voltage to a circuit in the semiconductor memory, a circuit is provided for generating a first voltage...
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5402020 |
Low voltage detecting circuit
Disclosed herein is a circuit for limiting the output current I O of a power MOSFET T 1 . A resistor R 2 converts the current I O into a low voltage V 0 . The low voltage V O is detected by a...
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5397931 |
Voltage multiplier
The present invention relates to a voltage multiplier for generating an output voltage which is several times greater than the operating voltage for connection of a load connected to ground to the...
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5394021 |
Piezoelectric transducer drive
Piezoelectric transducer drive apparatus applies varying pulse rates to the terminals of the transducer with the transducer acting as a capacitor and integrating the applied pulses. A conductive...
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5394027 |
High voltage charge pump and related circuitry
Charge pump and related circuitry (30) for operation at low power supply voltages includes voltage elevating circuitry (51), clock voltage level shifting circuitry (53), clock separator (55) and...
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5391944 |
Image-tone control circuit and gradient adjusting circuit therefor
In a tone control circuit of luminance signals, an adjusting current is used to add to or subtract from input signals with a gain control. Output signals are thus controlled to have a predetermined...
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5391934 |
Load sensor driver apparatus
A driver apparatus for driving one or more electrical loads includes an oscillator for providing an input signal. An amplifier amplifies the input signal. A power transformer has a primary winding...
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5386199 |
Compressor capable of compressing large input signal with minimal distortion
A compressor which is capable of compressing an input signal having an extremely large magnitude, without the signal being distorted and without the necessity of a additional circuit element such...
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5381107 |
Time-base inversion type linear phase filter of the infinite impulse response type having linear phase characteristics
In a time-base inversion type linear phase filter, an input signal is time-base inverted, and thereafter delayed. The delayed signal is time-base inverted back to the original time sequence and...
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5378937 |
Equalizer for optical communication systems
To compensate for nonlinear signal distortions in analog optical communication transmission systems, caused by laser chirps and the chromatic dispersion of the optical fiber, an equalizer in the...
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5367212 |
Geometry correction waveform synthesizer
A geometry correction waveform synthesizer includes a plurality of DC controlled multipliers each coupled to respective sources of complimentary geometry correction signals. The DC controlled...
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5367202 |
Voltage reference ladder having improved linearity
A voltage circuit, which provides a plurality of reference voltages, is formed from a resistive line having a first and second ends. The resistive line also includes a multiplicity of reference...
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5365122 |
Meta stable resistant signal detector
The present invention relates to a signal detector capable of accurately and reliably interpreting different logic states of an asynchronous signal of unpredictable pulse width or amplitude. In one...
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