Analog multiplier using radiation responsive impedance means in its feedback arrangement
United States Patent 3283135

Inventors:
Morton, Sklaroff
Publication Date:
11/01/1966
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Assignee:
ROBERTSHAW CONTROLS CO
Primary Class:
Other Classes:
330/103, 330/147, 250/214R, 330/59, 330/86, 327/358, 250/206, 250/215, 330/110, 330/69, 327/514
International Classes:
G06G7/163; G06G7/00
US Patent References:
3082381Automatic gain control circuit
3087120Automatic volume control circuit
3110813Solid state photosensitive control element
3159787R. m. s. meter using amplifier with controlled feedback
3167647Electrical analog computing circuit with square root extraction capability
3202905Remotely controlled attenuator devices
3211900Analog multiplier circuits using an electroluminescent element