Telephone circuit with a class-B amplifier output stage

Details Telephone circuit with a class-B amplifier output stage Telephone circuit with a class-B amplifier output stage

1984-12-11

1987-03-10

Rubinson, Gene Z.

Telephonic communications

Repeater

Transmission of power to distant repeater

330265, 330267, 379395, H04M 160

Patent

active

046492356

ABSTRACT:
The telephone amplifier of an audio transmission circuit comprises a class-B output stage as a result of which the required supply current of this amplifier is considerably lower than with prior art telephone amplifiers. A distorting voltage produced by the current signal in the supply current of the glass-B output stage does not affect the output signal of the telephone amplifier because the input stage and the output stage each comprise their own setting circuits which produce mutually independent setting voltages.

REFERENCES:
patent: 3753137 (1973-08-01), Mattfeld et al.
patent: 3936614 (1976-02-01), Suntop
patent: 4015212 (1977-03-01), Miyata
patent: 4058775 (1977-11-01), Crowle
patent: 4431972 (1984-02-01), Ishii et al.
patent: 4446443 (1984-05-01), Johnson et al.

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