Amplifier circuit

Details Amplifier circuit Amplifier circuit

1983-01-17

1985-08-27

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318677, 318592, 330255, 330265, G05F 100

Patent

active

045380996

ABSTRACT:
A driver amplifier circuit for an electromechanical position translator having two coils of substantially equal inductance and resistance is disclosed. The circuit includes an input for a control voltage representing desired translator position and a reference voltage, a very low value reference resistor series connected between the two coils, differentially driven push pull amplifiers connected to drive the coils, and two equal value feedback resistors connected from the reference resistor to inverting inputs of the amplifiers, whereby absolute magnitude of output voltage equals the input voltage plus twice the reference voltage, and wherein zero differential input volts yields zero current flow through the coils.

REFERENCES:
patent: 2961591 (1960-11-01), Franke
patent: 3402342 (1968-09-01), Wagner
patent: 3427520 (1969-02-01), Oppendahl
patent: 3801858 (1974-04-01), Giangaard
patent: 4088961 (1978-05-01), Ashley
patent: 4169276 (1979-09-01), Rodal
patent: 4189732 (1980-02-01), Atwater
patent: 4396959 (1983-08-01), Harrison
patent: 4441081 (1984-04-01), Jenkins
patent: 4490635 (1984-12-01), Harrison et al.
Data Sheet, TDA 2030 published by SGS-ATES Semiconductor Corp., _Scottsdale, Arizona.

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