Transient protector
US4924341A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Apr 20, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transient protection circuit comprising using a circuit connected to operate as a diode while presenting lower forward voltage drop for the same area and current as in pn junction diodes to provide greater efficiency. The circuit is a standard merged SCR circuit wherein a resistive path is provide between the base and collector of the pnp transistor and between the base and emitter of the npn transistor. In addition, there is provided a trip circuit wherein current is shunted away from the lateral transistor after a predetermined threshold current is passed through said transistor to minimize current drawn through the later transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.