5,000 Hour blocking oscillator for an electromagnetic fuel pump
US4079436A · kind A · utility
7Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Jun 28, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic fuel pump embodying a blocking oscillator relatively insensitive to breakdown under overvoltage conditions is disclosed. The blocking oscillator embodies an overvoltage protection circuit which renders the amplifier in the blocking oscillator portion of the circuit nonconductive during any overvoltage conditions. As a result, the Darlington amplifier only has to withstand the overvoltage and the probability of current mode failure is significantly reduced. A filter circuit surpresses the generated RFI to levels below industrial and military standards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.