Phase-shifting circuit

Details Phase-shifting circuit Phase-shifting circuit

1977-04-06

1979-01-30

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

330107, 330109, H03F 304

Patent

active

041375076

ABSTRACT:
A phase-shifting circuit comprises a first transistor circuit having a base to which an input signal is applied, first and second resistors of equal resistance values connected mutually in series and between an emitter of the first transistor circuit and ground, a third resistor connected at one terminal thereof to the emitter of the first transistor circuit, a capacitor connected between the other terminal of the third resistor and ground, and a second transistor circuit having a base connected to said other terminal of the third resistor and an emitter connected to the junction between the first and second resistors, an output signal being led out from a collector of the second transistor circuit.

REFERENCES:
patent: 3112451 (1963-11-01), Collins
patent: 3613011 (1971-10-01), Wood
Electronics -- "24 Active Filters", vol. 42, No. 15, Jul. 21, 1969.

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