Bridge-output amplifier with direct-coupled differential-mode fe

Details Bridge-output amplifier with direct-coupled differential-mode fe Bridge-output amplifier with direct-coupled differential-mode fe

1975-02-27

1976-09-28

Grimm, Siegfried H.

Amplifiers

Modulator-demodulator-type amplifier

330 15, 330 17, 330 18, 330 22, 330 28, 330 30D, 330 38M, 330146, H03F 134, H03F 3213, H03F 326

Patent

active

039835022

ABSTRACT:
A bridge-output amplifier, comprising four transistor means connected in bridge responsive to a drive signal to supply opposite ends of a cross-arm load with push-pull output signals, has direct-coupled differential mode feedback to reduce the quiescent potential applied across the load. This feedback is provided by a difference amplifier having the push-pull output signals applied to respective ones of its inverting and non-inverting input circuits and supplying a feedback signal at its output circuit. This feedback signal is used to improve the balance of the bridge.

REFERENCES:
patent: 3212019 (1965-10-01), Schwartz
patent: 3445776 (1969-05-01), Leidich
patent: 3808545 (1974-04-01), Stanley

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