Power Control for AC motor

Details Power Control for AC motor Power Control for AC motor

1983-06-14

1984-12-18

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Power-factor control

318812, H02P 540

Patent

active

044892640

ABSTRACT:
A motor controller (10) employing a triac (12) through which power is supplied to a motor (18) and wherein the open circuit voltage appearing across the triac (12) controls the operation of a timing circuit which triggers on the triac (12) at a time following turn off which varies inversely as a function of the amplitude of the open circuit voltage of the triac (12).

REFERENCES:
patent: 3652924 (1972-03-01), Dieterich et al.
patent: 4361792 (1982-11-01), Davis, Jr. et al.
patent: 4413217 (1983-11-01), Green et al.

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