Half and full wave energizing system for permanent magnet D.C. m

Details Half and full wave energizing system for permanent magnet D.C. m Half and full wave energizing system for permanent magnet D.C. m

1978-09-27

1980-09-02

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318345F, 318509, 310 50, 200157, H02P 728

Patent

active

042209013

ABSTRACT:
A half wave and full wave energization system for permanent magnet D.C. motors employing a hand trigger operated switch which commutates terminals of a full wave rectifier bridge when connected to a source of A.C. supply to provide selectively half wave and full wave energization of such motors when the trigger is depressed from an extended "off" position.

REFERENCES:
patent: 2777107 (1957-01-01), Medlar
patent: 3140429 (1964-07-01), Mais
patent: 3461375 (1969-08-01), Nestler
patent: 3518522 (1930-06-01), Jaffe et al.
patent: 3588411 (1971-06-01), Milcoy
patent: 3639822 (1972-02-01), Brown et al.
patent: 3936708 (1976-02-01), Dummer
Lytel, A., Electronic Motor Control, Photofact Publication 1964, pp. 10-12.
Winchester, C. R. "Power-Supply Voltage Changed 2:1 with SPDT Arrangement", Electronic Design, 2-16-76, p. 174.

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