Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-07-23
1991-10-29
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328127, 328151, 307494, G06G 712
Patent
active
050618652
ABSTRACT:
A non-linear transimpedance amplifier utilizing a reset integrator and having a broad dyamic range for amplifying an input signal over an extended range of levels is disclosed. The non-linear transimpedance amplifier comprises an accumulator for accumulating a charge representative of the input signal, a comparator for comparing the output of the first circuit to a reference voltage, a sample and hold for providing a voltage representative of the level of a time varying waveform at the instant during which the accumulator saturates, and a summer for summing a signal representative of the accumulated charge and the signal representative of the level of the time varying waveform. The output signal is representative of the input signal when the accumulator is unsaturated as well as when the accumulator is saturated. The present invention may also be operated as a linear amplifier. It finds particular application in the input circuits of infrared detector elements.
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Infrared Detectors "Detectivity and Preamplifier Consideration from Indium Antimonide Photovoltaic Detectors", G. R. Pruett and R. L. Petrits, Hallsted Press (1959), pp. 1524-1529.
Electronics, 2/3/77, pp. 96-100.
Grumman Aerospace Corporation
Miller Stanley D.
Tran Sinh N.
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