Comparison circuit
US4814643A · kind A · utility
3Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jul 14, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3026
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A comparison circuit includes a differential amplifier having first and second input circuits each of which is formed of darlington-connected transistors and which are connected to receive first and second input signals. The comparison circuit further includes an operation mode control circuit for selectively short-circuiting the base-emitter path of each of the first stage bipolar transistors in the first and second input circuits, in response to the first and second input signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.