Solid state switching circuit for an electromagnetic pump
US4122378A · kind A · utility
15Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1976 |
| Grant date | Oct 24, 1978 |
| Priority date | — |
| Expiry date | Dec 16, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.