Amplifying circuit

Details Amplifying circuit Amplifying circuit

H - Electricity

03

K

330/26

H03K 5/00 (2006.01) H03D 1/22 (2006.01) H03F 3/04 (2006.01) H03F 3/42 (2006.01) H03F 3/45 (2006.01) H03K 9/06 (2006.01) H04N 5/455 (2006.01)

Patent

CA 1084598

ABSTRACT OF TEE DISCLOSURE An amplifier provides a complete video and sound I.F. signal to a synchronous detector switching circuit, and the switching signal to be applied to the switching circuit is obtained from the same amplifier by connecting a grounded base stage, with its emitter impedance, in series with the amplifier load. The grounded base stage has a load tuned to the I.F. carrier frequency and the filtered signal from the grounded base is the signal applied as the switching signal to the syn- chronous detector switching circuit.

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