Bias start-up circuit
US5155384A · kind A · utility
25Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | May 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/226
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A start-up circuit for a bias generating circuit includes a current source for providing a small charging current, and transistors for coupling the charging current to the bias generating circuit during power up to force the bias generating circuit into a steady-current state. The start-up circuit also uncouples the current source from the bias circuit after the bias generating circuit is forced into the steady-current state to prevent the charging current from affecting the operation of the bias generating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.