Protective circuit for providing a reference voltage at a backplane
US5130636A · kind A · utility
5Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Feb 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/573
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A self-correcting protective circuit for providing a reference voltage to a backplane bus wherein the circuit includes a primary transistor, current sensing resistor and diode connected between a supply voltage and the backplane. The combination of a current-limiting resistor and a control transistor is used to sense current flow to the board through the primary transistor and limit same when the backplane bus voltage fluctuates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.