Capacitor discharge of latching relays and rotary filter

Details Capacitor discharge of latching relays and rotary filter Capacitor discharge of latching relays and rotary filter

1975-08-22

1977-02-22

Nozick, Bernard

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55283, 55290, 55293, 3071414, 318102, 318103, 361166, B01D 4600

Patent

active

040090116

ABSTRACT:
Direct current circuitry for sequentially energizing two or more motors or ther load devices, using capacitive discharge to latch in a relay for each load device. During one stage of operation a relatively small voltage is impressed on one lead of a capacitor whose other lead is grounded; a charge is thereby developed in the capacitor. Subsequently a relatively large voltage is impressed on the other lead of the capacitor to direct the charge into the coil of the relay, thereby effecting a relay latching action. The capacitor thereafter isolates the latching circuit from a de-latching circuit; the de-latching circuit is part of a latching circuit for a second relay used to energize a second load device. The invention is particularly useful in sequentially operating electric motors used in self-cleaning engine air cleaners.

REFERENCES:
patent: 2880819 (1959-04-01), King et al.
patent: 3175775 (1965-03-01), Wurtenberg et al.
patent: 3472002 (1969-10-01), Brown et al.
patent: 3628313 (1971-12-01), Broadbent

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