Power on/off protect circuit
US4493000A · kind A · utility
10Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1983 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Sep 30, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A simplified power on/off protect circuit is provided to enable logic above a predetermined power supply voltage level and disable the logic below such predetermined voltage level. The circuit comprises a zener diode in combination with a transistor such that the zener controls the voltage level at which the transistor turns on. The transistor enables the logic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.