H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/22, 350/53
H03F 3/45 (2006.01) H03F 3/72 (2006.01) H03K 17/56 (2006.01) H04N 9/76 (2006.01)
Patent
CA 1101943
ABSTRACT A switching circuit comprising at least two amplifiers having separate inputs, for receiving input signals, and a common output. A selecting circuit for selecting which of the input signals is amplified and applied to the output includes a switchable biasing means for biasing one amplifier ON and the other amplifier OFF. The amplifiers inputs are inverting inputs and each amplifier has a low output impedance and a feedback network present between the inverting input and the common output whereby the feedback network of the OFF amplifier does not effect the ON amplifier.
263158
North American Philips Corporation
Van Steinburg C.e.
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