Power control circuit

Details Power control circuit Power control circuit

1976-09-17

1978-03-07

Truhe, J. V.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219482, H05B 102

Patent

active

040781682

ABSTRACT:
Electric process heating control includes a combination of (1) pyrometric temperature controller providing a DC control signal wherein the ratio of "on" time to "off" time is proportional to the deviation of temperature from set-point value and to the duration of such deviation, (2) phase-angle-fired power controller, and (3) current limiter for altering the phase angle firing of the power controller.

REFERENCES:
patent: 3553429 (1971-01-01), Nelson
patent: 3752956 (1973-08-01), Cahill et al.
patent: 3789190 (1974-01-01), Orosy et al.

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