Polarity and overload protective circuit for electric consumers
US4520419A · kind A · utility
18Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Aug 12, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H11/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The protective circuit against overpoling and overloading of an electronic consumer includes a combination of a zener diode connected parallel to the consumer and a parallel connection of a fuse and a conventional diode connected in series with one power supply terminal. Preferably an additional fuse is connected in series between the power supply and the first-mentioned fuse. In the case of a polarity reversal, a fuse burns out, but after restoring normal operational conditions the protective circuit permits operation of the consumer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.