Welding generator exciter control

Details Welding generator exciter control Welding generator exciter control

1975-09-19

1977-03-29

Hickey, Robert J.

Electricity: single generator systems

Automatic control of generator or driving means

Voltage of generator or circuit supplied

322 59, 322 72, 219133, H02P 910, H02P 926

Patent

active

040151883

ABSTRACT:
An apparatus and a method for controlling the exciter current in a welding generator such that the open circuit voltage of the generator is regulated within suitable limits prior to arc start. A voltage controlled relay is connected to the generator's output and controls the inclusion of a voltage regulated biasing circuit in the base circuit of a transistor connected in series in the exciter circuit to assure that when the voltage exceeds a preset level of the voltage controlled relay, the exciter current will remain substantially constant.

REFERENCES:
patent: 2719259 (1955-09-01), Miner, Jr.
patent: 2734116 (1956-02-01), Rybolt
patent: 3505587 (1970-04-01), Carroll et al.
patent: 3649903 (1972-03-01), Fiedler

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