Bipolar power supply
US5317254A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/585
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A bipolar power supply capable of selectably supplying either a positive or a negative voltage at an output terminal. The power supply comprises a first operational amplifier, a second operational amplifier, a first transistor electrically connected to a positive voltage source and a second transistor electrically connected to a negative voltage source. The first transistor is electrically connected to the first operational amplifier and the second transistor is electrically connected to the second operational amplifier so that the first and second amplifiers control the operation of the first and second transistors respectively. The inputs of the first and second operational amplifiers are electrically connected in a manner that prevents them from simultaneously providing large positive voltages at their outputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.