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4068136 |
Analog voltage memory device
Disclosed is an analog voltage memory device comprising a differential amplifier for deriving the difference between two analog inputs, an operational amplifier to which are applied the output of...
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4047115 |
Sample pulse generating apparatus
A sample pulse generating apparatus is provided having an input signal supply circuit for supply an input signal with a high frequency to be sampled, a saw tooth wave generator for generating a saw...
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4047059 |
Comparator circuit
A switch, connected in series with a current source across a source of operating voltage, is opened and closed in accordance with the ratio of two input signals to produce an output signal. The...
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4001701 |
Circuit for combining pulse trains
An electric circuit with a plurality of inputs, each input receiving a train of pulses. Each pulse of each train sets a latch of cross-coupled logic gates to an output of logic 1. A clock...
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3979682 |
Hysteresis compensator for control systems
A hysteresis compensator reduces the effects of a dead zone induced error in the actuation of a controlled device in response to a control signal. A bias is applied to the uncompensated control...
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3970774 |
Electronic signal mixer
An electronic signal mixer is provided for combining first and second signals by additively (or differentially) combining the first and second signals to provide a first output signal. The first...
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3943454 |
Digital logic circuits for producing digital sum and difference frequencies
The present invention provides means for deriving a single frequency signal from logic signals A(t) and B(t) by first applying the logic signals to a combining arrangement, which includes logic...
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3920962 |
Pulse summing circuit
In order to sum or totalize the pulses which are selected from a pulse generator by means of a plurality of percent switches, the percent switch outputs are sequentially scanned by means of a...
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3882402 |
Circuit for transmitting velocity signals derived from position signals
A rate signal generator for a second order servo-mechanism. A position transducer generates at least two phase-displaced sinusoidal position signals. These signals synchronize a multi-phase clock...
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3866129 |
Device for the digital subtraction of frequencies
A device for the digital substraction of two different frequencies includes means which reverse the phase of a wave-form of the signal of higher-frequency about 180° during its coincidence with...
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3849676 |
PHASE-CORRECTOR
The signal to be corrected in phase is applied in phase quadrature to a first channel comprising a linear attenuator and to a second channel comprising two diodes connected in parallel and in...
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3848117 |
ELECTRONIC ANALOG OPERATIONAL CIRCUIT
An electronic analog operational circuit having a large time constant such as several tens of minutes suitable for control elements in general industrial instrumentation, for example, a controller...
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3840818 |
FULL-WAVE RECTIFIER CIRCUIT
A full-wave rectifier circuit which comprises a differential amplifier stage, and a matrix network consisting of a plurality of resistances connected in series in the shape of an octagonal loop....
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3839647 |
TRANSISTOR LINEARIZER CIRCUIT
The disclosed invention includes a transistor having a predetermined β characteristic, a first resistance means coupled between a first voltage source and the collector and a second resistance...
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3828260 |
HEMATOCRIT MEASURING APPARATUS
A hematocrit measuring apparatus processes pulses whose amplitude represents blood cell volume by a two stage analog storage process where peak pulse amplitudes are sequentially detected by the...
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3812385 |
SOLID STATE TOTALIZER
A totalizer which acts as a summation relay to connect a number of measuring devices to a single recording end device. In the totalizer, an independent timing pulse source is employed to actuate...
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3787774 |
FILTER CIRCUITRY
Circuitry for filtering a distinct variable spectral component includes a band-rejection filter formed by a summing amplifier with a feedback loop and a bandpass-filter connected to one of its...
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3780273 |
ANALOG-TO-DIGITAL WATTMETER MULTIPLIER
Operational amplifier circuitry converts two analog input signals into a digital output representing the product. Two pulse forming channels generate two pulse trains, one having a frequency...
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3760284 |
CIRCUIT ARRANGEMENT FOR TAKING THE MEAN OF SEVERAL INPUT VOLTAGES
A control apparatus has redundant input signals from which an output signal is produced. There is an input for each input signal respectively and a double-pole between the respective input and the...
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3757234 |
FUNCTION GENERATOR
A plurality of amplifiers have their outputs connected with an input signal to an analog adder. The amplifiers are disabled successively by a clamp. The adder output voltage versus input voltage...
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3752973 |
APPARATUS FOR PRODUCING VOLTAGE FUNCTIONS
An astable multivibrator applies periodically generated pulses to a frequency divider. The pulses from the frequency divider are decoded by a binary-to-decimal converter, and the outputs of the...
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3743947 |
RELATIVE AMPLITUDE SEPARATION DETECTION GATE
A relative amplitude separation detection gate in which a relative amplitude difference between signals may be detected. The gate or system inverts one of the signals. The inverted signal and the...
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3739163 |
MEASUREMENT OF MEAN WAITING TIME
The mean value of waiting time, Wm, for an elevator system on a certain floor can be obtained by detecting intervals of the elevator arrival T 1 , T 2 , T 3 , . . . , T i at the floor and carrying...
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3731075 |
AUTOMATIC RATE TRACKER
7. In a signal position determining means for determining the exact posit of the maximum correlation in a correlation function signal cycle obtained from a correlation circuit for comparing equally...
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3714590 |
AVERAGING CIRCUIT
A circuit is shown which has the unusual property of averaging the amplitude of a plurality of signals which have been received one after the other, regardless of the length of time before the...
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3702441 |
FREQUENCY SYNTHESIZING SYSTEM
A frequency synthesizing system includes frequency synthesizing means operative to produce an adjustable intermediate frequency, frequency dividing means for dividing the intermediate frequency by...
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3701974 |
LEARNING CIRCUIT
A learning circuit of the type adapted to converge on a desired output in response to solution control signals. A number generator is provided for producing digital circuit input signals according...
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3689802 |
APPARATUS FOR SUPERVISING THE FUNCTIONING OF AN ANALOG PLURAL-CHANNEL REGULATING SYSTEM
The mean value of the amplitude of analog signals appearing on individual control paths is continuously formed. Three-level switch means are provided which are addressed by groups of two control...
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3686572 |
PULSE-COMPRESSOR SYSTEM
A system for compressing a frequency-modulated pulse signal includes means for separating the signal into a plurality of frequency component signals, a plurality of dispersive media through which...
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3686513 |
VOLTAGE RATIO CIRCUIT
A ratio computing circuit for determining the ratio of two input signals by using a first input signal to preset the resistance of a field-effect transistor. The transistor resistance is connected...
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3684982 |
FUNCTION GENERATOR AND VARIABLE CAPACITY DIODE OSCILLATOR EMPLOYING SAID GENERATOR
Function generator capable of furnishing from a voltage applied to its input, a function comprising a sum of terms respectively proportional to the different successive powers of said voltage. The...
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3684968 |
FLOATING POINT AMPLIFIER
A floating point amplifier amplifies an analog signal for presentation to an analog to digital converter. The output of the floating point amplifier is sensed and the parameters of the signal are...
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3667057 |
METHOD AND MEANS FOR PROVIDING AN OUTPUT CORRESPONDING TO THE AVERAGE OF ACCEPTABLE INPUT SIGNALS
A circuit has averaging means for providing an output corresponding to the average acceptable input signals, a comparator for comparing each input signal to the average output, and switching means...
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3651410 |
ADDING FREQUENCY-MODULATED ELECTRICAL SIGNALS
Apparatus for generating an output signal the frequency of which is equal to the sum of the frequencies of two frequency-modulated input signals without demodulating the input signals is used in...
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3644836 |
NONLINEAR COMPENSATION NETWORK
A compensation network having as an input a nonlinear transducer generated ignal, which produces a linear signal by balancing out the nonlinearities in the transduced signal. Compensation is...
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3639778 |
TESTING A SIGNAL VOTER
A signal voter having a plurality of inputs and a single output is tested by applying to its inputs alternating current tracer signals that vary differently as a function of time. The resultant...
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3631232 |
APPARATUS FOR SIMULATING THE ELECTRICAL CHARACTERISTICS OF A NETWORK
A method of simulating the electrical characteristics of a network by utilizing a tapped delay line, the output taps of which are connected to variable gain devices. The gain of said devices are...
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3624524 |
ANALOG CHARACTER GENERATOR
An analog character generator which continuously generates X- and Y-position signals to write symbols and a brightness unblanking signal. The selected symbol waveforms are approximated by joining a...
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3617861 |
CIRCUIT FOR SUMMING ELECTRICALLY ISOLATED SIGNALS
A control circuit for an SCR that is capable of responding to a plurality of electrically isolated input signals has a summing circuit connected to its input terminals to sum functions of the input...
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3610950 |
SIGNAL SELECTION CIRCUIT
The apparatus selects the intermediate one of three input signals of different voltages and delivers that intermediate signal to an output. Each input signal is delivered to a respective...
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3596107 |
SIGNAL SELECTOR
A signal selecting means to which a plurality of signals of variable amplitude and sign are applied and which develops an output signal corresponding in magnitude and sign to preselected ones,...
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3586838 |
ARITHMETIC CIRCUIT INCLUDING ELECTRONIC MULTIPLYING AND DIVIDING CIRCUITRY
Electronic circuitry is disclosed for combining signals representative of input factors to provide arithmetic combinations thereof.
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3582759 |
SHIELDED BALANCED MICROWAVE ANALOG MULTIPLIER
A completely shielded and balanced diode bridge, having biased diodes to insure dynamic balance and square-law operation, is fed by sum and difference signals from a hybrid ring drive which...
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3581111 |
ADAPTIVE INTEGRATOR FOR DIGITAL SIGNALS
An integrator circuit is described in which a received signal is added to a feedback signal. The feedback signal is generated by delaying the sum of the received signal and the feedback signal. The...
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3535553 |
NON-ADDITIVE MIXER
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3508073 |
COMPARATOR CIRCUIT
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3502990 |
SUMMATION NETWORK
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3465276 |
NEGATIVE FEEDBACK CIRCUIT EMPLOYING COMBINATION AMPLIFIER AND LEAD-LAG COMPENSATION NETWORK
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3454850 |
DUAL MOS-FET CHOPPER-SUMMER CIRCUIT IN A CLOSED LOOP SERVO
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3371160 |
Television circuit for non-additively combining a pair of video signals
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