Solid state switching circuit for an electromagnetic pump

Details Solid state switching circuit for an electromagnetic pump Solid state switching circuit for an electromagnetic pump

1976-12-16

1978-10-24

Duggan, Donovan F.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318132, 318134, 417417, H02K 3302

Patent

active

041223780

ABSTRACT:
A solid state switching circuit for an electromagnetic pump is disclosed herein. The circuit comprises a Darlington amplifier controlling the current flow through the pump's solenoid in response to the state of a piston position sensitive electrical switch, a Zener diode and capacitance in the base circuit of the Darlington amplifier in parallel with the electrical switch and an inductive clamp circuit in parallel with the pump's solenoid coil.

REFERENCES:
patent: 3229225 (1966-01-01), Schimpf
patent: 3278818 (1966-10-01), Winestock
patent: 3293516 (1966-12-01), Maier et al.
patent: 3381616 (1968-05-01), Wertheimer et al.
patent: 3515966 (1970-06-01), DeValroger et al.
patent: 3629674 (1971-12-01), Brown
patent: 3729691 (1973-04-01), Beiswinger et al.
patent: 3804558 (1974-04-01), Naito
patent: 3849031 (1974-11-01), Charbonneau et al.

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