Electric power control system

Details Electric power control system Electric power control system

1979-04-09

1981-12-15

Witkowski, Stanley J.

Electricity: motive power systems

Battery-fed motor systems

318269, 318347, 318349, 318376, 318432, H02P 700

Patent

active

043061796

ABSTRACT:
An instantly variable constant current control is interposed between a bank of batteries and a motor. The variable constant current control comprises a series pass transistor operating in a linear mode and controlled by a reference voltage from a potentiometer coupled to an accelerator pedal. Correction voltage from the series pass transistor circuit is proportional to current. The accelerator reference voltage and the current correction voltage are compared in a linear operational amplifier which controls the "on" resistance of the series pass transistor.

REFERENCES:
patent: 3845835 (1974-11-01), Petit
patent: 3855511 (1974-12-01), Smith
patent: 3923116 (1975-12-01), Thompson et al.
patent: 4044287 (1977-08-01), Ratzel
patent: 4082988 (1978-04-01), Reime et al.

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