Protection circuit for an excitation current source
US6072676A · kind A · utility
24Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Apr 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/60
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A protection circuit for an excitation current source protects against excessive compliance voltage by using a cascode transistor between the current source and an output terminal, and a transistor coupled to the output terminal and to the control lead of the cascode transistor to cause the cascode transistor to turn off if the voltage exceeds a threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.