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| Number | Title | Issue Date |
| 4350964 | Impedance generator circuit An improved impedance generator circuit, for use with two-wire transmission systems of the type encountered in telephony, is adapted to be interfaced with the wires and operates in a manner to effectively generate a desired positive or negative impedance ... | 09/21/1982 |
| 4349755 | Current product limit detector A circuit for detecting when the product of two independent currents equals or exceeds a predetermined upper limit is disclosed. The circuit includes a load current source for providing a load current for defining the predetermined upper limit; a differen... | 09/14/1982 |
| 4333024 | Method and apparatus for processing an analog signal A method and apparatus for processing an analog signal before it is converted into steep-sided pulses wherein a variable D.C. voltage is generated whose variation is representative of the change in values of the negative-going portions of the analog signa... | 06/01/1982 |
| 4331894 | Switched-capacitor interolation filter An interpolation or smoothing filter circuit for a switched-capacitor system which transforms the sampled-and-held output signals from a switched-capacitor filter into sampled-and-held signals with a doubled sample rate. The circuit comprises an operation... | 05/25/1982 |
| 4326135 | Differential to single-ended converter utilizing inverted transistors A differential to single-ended converter circuit is disclosed which utilizes integrated injection logic device geometrics to significantly reduce the area required to fabricate the converter within an integrated circuit. Inverted transistor operation and ... | 04/20/1982 |
| 4320347 | Switched capacitor comparator An operational amplifier is designed to eliminate the effects of inherent voltage affects when used as a voltage comparator, while maintaining a high slew rate and a fast response time by providing a feedback capacitor which can be connected and disconnec... | 03/16/1982 |
| 4306191 | Initializing circuit for long-time constant electronic devices An electronic circuit is described for accurately and rapidly initializing long-time constant amplifiers and the like. More specifically, the circuit is designed to establish quiescent conditions in minimal time and with minimal settling in amplifiers or ... | 12/15/1981 |
| 4271403 | Coaxial cable switching circuit A coaxial cable switching circuit includes a differential comparator connected to a cable to be switched, for receiving a switching pulse therefrom. The output of the differential comparator is connected to a pulse width discriminating circuit which in tu... | 06/02/1981 |
| 4268760 | Amplitude-limiter An amplitude limiting circuit is provided in which the input signal is fed to the non-inverting input terminal and the output is taken from the inverting input terminal of an operational amplifier having a feedback resistor connecting the inverting and ou... | 05/19/1981 |
| 4264872 | Differential amplifiers utilizing MIS type field effect transistors In a differential amplifier comprising a pair of transistors, these transistors comprise first and second MIS type field effect transistors with their gate electrode connected to a source through load resistors or MIS transistors, drain electrodes connect... | 04/28/1981 |
| 4198581 | Temperature compensating comparator An emitter-coupled differential comparator compares a horizontal rate ramp signal with a vertical-frequency parabola in a television context for producing horizontal rate pulses duration-modulated at the vertical rate. The comparator is arranged to compen... | 04/15/1980 |
| 4147943 | Sensitive high speed clocked comparator A sensitive high speed clocked comparator for use with low level differential logic circuits which utilizes an amplifier, a Gilbert Gain Cell, and load devices to amplify the difference between analog voltages being compared, and a high speed latch to inc... | 04/03/1979 |
| 4072870 | Comparison circuit having programmable hysteresis A differential amplifier circuit suitable to be fabricated in monolithic integrated circuit form and having externally programmable, symmetrical input hysteresis. The differential amplifier circuit includes a differential input stage having a resistor cou... | 02/07/1978 |
| 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 the differential amplifier and the source follower voltage ... | 01/10/1978 |
| 4056740 | Differential input-differential output transistor switching cell A symmetric, two-branched transistor switching circuit is disclosed wherein steering current is fed to a node between the two branches. A logic input signal controls the electrical balance between the two branches controlling the flow of steering current ... | 11/01/1977 |
| 4056735 | One shot pulse generator and logic level converter circuit An intensity control system for a cathode ray tube (CRT) is disclosed. The system provides precise intensity control for a CRT whose control characteristics are only slowly varying. Precise intensity control is provided by measuring the cathode ray tube b... | 11/01/1977 |
| 4055776 | CCD differential current apparatus An inductively coupled current apparatus for differential tap currents used n conjunction with charge coupled devices (CCDs) permits the current differences flowing in tapped clock lines of charge coupled devices to be conveniently measured.... | 10/25/1977 |
| 4048525 | Output circuit for charge transfer transversal filter The output circuit includes a high gain differential amplifier having an inverting input terminal, a non-inverting input terminal and an output terminal with a feedback capacitance connected between the output terminal and the inverting input terminal. Th... | 09/13/1977 |
| 4039981 | Variable impedance circuit A variable impedance circuit comprises an amplifier with a high input impedance and a high output impedance whose gain is variable in response to a control voltage, an emitter-follower transistor, and an impedance element adapted to feedback an output sig... | 08/02/1977 |
| 4032801 | Electromagnetic radiation intensity comparator apparatus An electromagnetic radiation intensity comparator is disclosed for providing an indication of differences between electromagnetic radiation intensities occurring at different photodetectors.... | 06/28/1977 |
| 4028558 | High accuracy MOS comparator The voltages to be compared are applied to a passive MOS capacitor differencing circuit for producing a voltage difference signal, which then is amplified by a high-gain non-precision FET amplifier, the output of which is passed through a low output imped... | 06/07/1977 |
| 3968361 | Laser receiver anti-sun circuit A circuit for preventing laser receiver overload caused by sunlight wherein feedback network provides a d.c. current to cancel the d.c. level of the diode current; and, a receiver design alternative to conventional designs wherein higher sensitivity is pr... | 07/06/1976 |
| 3956708 | MOSFET comparator A family of comparators are described which utilize only MOSFET transistors as the active devices. These comparators exhibit an infinite input impedance and zero input offset and bias currents. The circuits are capable of operating over a wide range of DC... | 05/11/1976 |
