Remote control phase shift circuit for thyristor

Details Remote control phase shift circuit for thyristor Remote control phase shift circuit for thyristor

1974-10-23

1976-05-11

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

307252B, 307252N, 323 36, 318227, 318345, H02P 300

Patent

active

039566889

ABSTRACT:
A control circuit for a motor includes a thyristor connected to apply current to the motor, and a phase shift circuit for controlling the thyristor including a series RC circuit connected in parallel with the thyristor. The junction of the resistor and capacitor is connected to the control electrode of the thyristor. A transformer has a primary winding connected in parallel with the capacitor, and a variable resistor, which may be remotely located, connected in series with the secondary winding, for varying the phase shift of the phase shift circuit.

REFERENCES:
patent: 3323017 (1967-05-01), Powell et al.
patent: 3417320 (1968-12-01), Muskovac
patent: 3512077 (1970-05-01), Evalds
patent: 3524078 (1970-08-01), Harris, Jr.
patent: 3535615 (1970-10-01), Howell et al.
patent: 3579706 (1971-05-01), Hetland
patent: 3857076 (1974-12-01), Hetland
"Using the Triac for Control of AC Power" by J. H. Galloway, G. E. Pub. Mar. 1966, pp. 4-9.

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