Amplifier circuit with surge suppression

Details Amplifier circuit with surge suppression Amplifier circuit with surge suppression

1984-08-09

1985-10-15

Mullins, James B.

Amplifiers

Hum or noise or distortion bucking introduced into signal...

330 51, 328165, H03F 114

Patent

active

045477426

ABSTRACT:
An amplifier circuit including a resistor connected in series with a signal amplifier, which is designed as a feedback inverting amplifier, and an additional switching circuit serving to suppress surges. Such an amplifier circuit can, e.g., be used for amplifying the output signal of a digital-to-analog converter. The additional switching circuit operates independently of external control and without itself producing spurious signals. The switching circuit is placed in parallel to the series resistor and includes an inverting amplifier, which has faster response time than the signal amplifier, a high-pass filter and an impedance converter having a high input impedance connected in series with the input to the inverting amplifier. A voltage limiting two-terminal network is connected in series with the output of the inverting amplifier.

REFERENCES:
patent: 4453133 (1984-06-01), Travis

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