Matches 51 - 100 out of 169 < 1 2 3 4 >
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5686861 Filter circuit  
A filter circuit that consumes very little electric power. The active filter is a linear inverter constructed by 1) an inverting amplifying portion composed of an odd number of MOS inverters...
5684428 Sensor apparatus capable of preventing high frequency noise  
A sensor apparatus is capable of removing RF noise. The sensor apparatus is comprised of a first power supply line connected to a power supply terminal; a second power supply line separately...
5671133 Electric power receiving and supplying circuit  
An electric power receiving and supplying circuit comprises: a microstrip patch antenna, having a feeding point, for receiving a microwave signal and supplying an electric power; a rectifier, for...
5614858 Time delayed filter monolithically integratable  
A time delay filter includes at least one field-effect transistor of the MOS type and at least one bipolar transistor having their respective base and gate terminals connected together. The bipolar...
5610551 Filter circuit  
A filter circuit includes a differential amplifier having a mutual conductance of g m1 , and a transistor T 1 which attenuates an output current of the differential amplifier by 1/β (β is a...
5606277 AC coupling loops for current-to-voltage transimpedance amplifiers and methods of using same  
Transimpedance amplifier circuits and methods are provided in which the break frequency of the amplifier is adjusted through a single interface point to the amplifier circuit. At frequencies below...
5587686 Time domain signal filter  
A time domain signal filter detects a change in an input signal and replaces the input signal with an internally generated substitute signal for a filter period. The filter period is user...
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...
5534810 Power stage bias circuit with improved efficiency and stability  
A driver circuit especially for driving scan velocity modulation (SVM) coils or similar loads is characterized by low quiescent current loading and high peak output. The driver is coupled to an...
5530391 Filter circuit with a resonator operated in series resonance  
A filter that has a resonator operated in series resonance and a two-pole terminal resonator circuit with a resonator whose electric conductance can be divided into a useful component and a...
5517140 Sample and hold circuit  
A sample and hold circuit has an analog switch, a hold capacitor, a voltage-follower type operational amplifier, and a ringing cancel circuit. The ringing cancel circuit is interposed between a...
5500613 Method for producing a digital sine wave signal with a given sampling rate, and circuit configuration for carrying out the method  
A method for generating a digital sine wave signal having a predetermined sampling rate includes generating a pulse train with an alternating or constant amplitude sign, at a sampling frequency...
5451852 Control system having signal tracking window filters  
A control system having a source of control signals and a multi-window electrical signal tracking filter. The signal tracking filter includes an operational amplifier operating in the non-inverting...
5444312 Soft switching circuit for audio muting or filter activation  
A soft switching circuit gradually connects an audio signal to zero reference level to mute the audio signal, or connect a filter to enable the filter. A MOSFET is connected between the audio...
5440261 Electronic device with low current consumption  
An electronic device comprises, for example, a portable device or a signal receiver mounted on a vehicle for opening and closing the doors of the vehicle in response to telecontrol signals from a...
5428834 Method and circuit for processing and filtering signals  
A method for processing electrical signals includes the steps of: storing a plurality of first data signals, each representative of an instantaneous amplitude of a first input signal in a memory;...
5426393 Tunable filter network having DC accuracy  
A highly DC accurate filter network capable of implementing a transfer function of arbitrary complexity is disclosed herein. The filter network includes a differential integration and summation...
5410264 Adaptive impulse noise canceler for digital subscriber lines  
An impulse noise canceler includes circuitry which recognizes, locates, and cancels impulse noise when it occurs in an incoming signal. Impulse noise is characterized by a shape, an amplitude, and...
5394036 Circuit and method of zero generation in a real-time filter  
A real-time tracking filter circuit (10) that exhibits accurate zero placement is implemented in a monolithic structure by incorporating a three-input summing circuit (24) and a two-input summing...
5372046 Vortex flowmeter electronics  
A vortex flow transmitter has a filtering circuit receiving a noise contaminated input signal representative of the flow and which has a fundamental frequency varying responsively to flow. The...
5350908 Automatic gain control circuit having disturbance cancellation capabilities  
A system for filtering electrical signals and cancelling large amplitude disturbance events contaminating such signals which might otherwise interfere with these signals being further processed....
5350956 Deviation limiting transmission circuit  
A deviation limiting transmission circuit comprising a soft clipper (13) which performs measurements at two nodes. The soft clipper (13) limits both its own output signal and the output signal of a...
5298797 Gate charge recovery circuit for gate-driven semiconductor devices  
A gate charge recovery circuit prevents generation of the voltage spike that would otherwise appear across the sense resistor that is employed to detect the current flowing through the switched...
5264736 High frequency resonant gate drive for a power MOSFET  
An efficient power MOSFET resonant gate drive circuit having a large coupled inductor between and in series with two switching transistors. The inductor prevents cross-conduction from the power bus...
5233245 Rate controlled noise filter  
A rate controlled noise filter according to the present invention comprises a transient detector adapted to receive an input signal and detect the rate at which the input signal is changing. The...
5227732 Noise reduction circuit  
A circuit for reducing noise from a luminance signal which controls the brightness of the screen in a video apparatus such as a color TV, VCR or VDP is disclosed. The circuit comprises a gate...
5206548 Noise reduction circuit  
A noise reduction circuit having an amplification arrangement including first and second voltage-follower amplifiers coupled to a low-pass filter for providing symmetrical push-pull operation on an...
5170387 Apparatus for reading an information pattern from a record carrier and signal-processing circuit for use in such apparatus  
An information track on a record carrier (2) is read by a read head which includes detectors producing detection signals (IA, IB, IC and ID) which correspond to the information pattern on the...
5162983 Active filter device for suppressing harmonics in a system including a capacitive load  
An active filter suppresses harmonic current components flowing through a power supply, to which a compensation object load including a harmonic component source and a capacitive load is coupled....
5084639 Low frequency noise canceling photodetector preamplifier useful for computerized tomography  
A preamplifier interfaces low level current-mode signals, such as from a photodetector in a computerized tomography system, to a corresponding voltage-mode signals, with a dynamic range on the...
5065307 Apparatus for insulating and preventing noise in the output of a sequence controller  
A built-in insulating element for electrically insulating a process portion from a control object and for transmitting a process result to the control object is provided in the output portion for...
5065054 Input buffer with noise filter for eliminating short-pulse-width noise  
An input buffer provides buffering of digital input signals and noise filtering. The input buffer includes a Schmitt trigger having a fast response to digital signal rising edges and a slow...
5057785 Method and circuitry to suppress additive disturbances in data channels  
A method and circuitry for suppressing additive transient disturbances in an analog differential input signal, such disturbances being due, for example, to thermal asperity transients caused by an...
5017880 Varying operational frequency control circuit apparatus with noise minimizing feature  
Many prior control circuits inject a small amplitude control tone into the prime signal path where the distortion added to the prime or main signal by the control tone does not present a...
5001374 Digital filter for removing short duration noise  
A digital filter for removing short duration perturbations from a regular train of bilevel pulses on an input line (10) includes a clock (12) for providing a clock signal at a frequency which is an...
4939473 Tracking harmonic notch filter  
An electronic filter for automatically tracking and removing harmonically lated interfering electrical signals such as power line interference harmonics without attenuating other signals of...
4916332 Timing and supply bias circuit using one capacitor  
A supply bias circuit in which supply current is provided through a resistor coupled to a timing circuit such that this resistor acts as a low pass filter in conjunction with the timing capacitor....
4908530 Non-linear squelch circuit for IEEE-802. 3 protocol  
Method and apparatus for non-linearly filtering impulse and low frequency noise received over a network so as to avoid false activation of equipment is disclosed. A squelch circuit assures that...
4894566 Noise reduction circuit  
A noise reduction circuit includes a variable band-pass filter and a clipping circuit. An oscillator is used to sweep the band-pass of the variable band-pass filter through a frequency range. The...
4859883 Digital circuit arrangement for quantization-noise reduction  
The invention relates to a digital circuit arrangement which comprises an interpolation filter which over samples a digital input signal, a noise shaper (1) following the interpolation filter (1),...
4788461 Solid state inductance simulator  
An active choke circuit. The circuit can be used in place of a conventional discrete coil to permit a precise marriage of logic functions to analog functions in a telephone powered by the current...
4727270 Noise immune circuit for use with frequency sensor  
A noise immune circuit for use with pulse type sensors whereby a noise modulated signal is clipped and shaped in a hard limiter to a square wave signal before being filtered by a low pass filter. A...
4686483 Digital filter circuit  
A digital filter circuit includes first and second counters which set and reset a latch circuit at predetermined counts. Clock pulses and the input signal are passed through a gate circuit to the...
4682060 Noise suppression in an I-F substitution loop  
In an I-F substitution loop having a summing junction for receiving both an I-F signal and a substitution signal, an amplification loop is connected in parallel with the substitution loop for...
4668875 Waveshaping circuit  
A waveshaping circuit for providing logic levels from a voltage source to a digital circuit comprising a pull-up (or pull-down) resistor for converting the voltage source into voltage signals of...
4651034 Analog input circuit with combination sample and hold and filter  
An analog input circuit, which samples and holds predetermined components sampled from input signals, has a filter and a sample and hold circuit which are formed as a unitary structure to simplify...
4636053 Distance detecting device  
A distance detecting device comprising radiation projecting means for projecting a radiation beam; radiation sensing means which is disposed away from the radiation projecting means with a given...
4599525 De-glitch circuitry for video game memories  
De-glitch circuitry selectively responds to the time duration of actuation signals for selecting between pages in a read only memory. The de-glitch circuitry uses MOSFET transistors to act as...
4577336 Integrable frequency divider circuit having a feedback controlled differential amplifier as its preamplifier circuit  
Integrable frequency divider circuit, including a preamplifier in the form of a differential amplifier having a signal input for receiving signals to be processed, a reference input and two...
4575650 Signal translating circuit with compensated transient response  
A signal voltage from a signal processing path is coupled via an interfacing terminal to an input port of a filter, the output port of which is connected to the base input of a current source...
Matches 51 - 100 out of 169 < 1 2 3 4 >