Constant voltage circuit comprising temperature dependent elements and a differential amplifier
US6181192A · kind A · utility
5Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Nov 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/18
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A constant voltage circuit having excellent temperature characteristics at a wide temperature range. Temperature characteristics control means constructed by connecting a voltage dividing circuit formed by connecting fixed resistors in series to a diode in parallel is provided between a fixed resistor and a Zener diode having a positive temperature coefficient of a bridge circuit, and the output of a connection point between the fixed resistors of the temperature characteristics control means is applied to the non-inversion input terminal of a differential amplifier to correct the temperature change of the Zener diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.