Signal level control circuit

Details Signal level control circuit Signal level control circuit

1974-11-06

1976-07-06

Gensler, Paul L.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

307264, 330 35, 357 23, H03G 330

Patent

active

039684520

ABSTRACT:
A signal level control circuit having an amplifying transistor in combination with a resistive layer insulator semiconductor field effect transistor in which the drain and source electrodes of the field effect transistor are connected in series with the base and emitter electrodes of the amplifying transistor. A main input signal is applied to the base electrode of the amplifying transistor, a control voltage of either D.C. or lower frequency than said main signal is applied to the first and second gate electrodes of the field transistor and a level controlled output signal is obtained from the collector electrode of the amplifying transistor whereby the output signal level is made to be a linear function of the control voltage applied to the gate electrodes of the field effect transistor.

REFERENCES:
patent: 3714522 (1973-01-01), Komiya et al.
patent: 3832645 (1974-08-01), Greutman

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