Voltage monitoring device
US7791494B2 · kind B2 · utility
2Cited by
4References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 15, 2007 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Oct 30, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16595
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A voltage monitoring device includes a comparison voltage generating circuit for providing a comparison voltage, a comparator, an electronic switch, and an LED. The comparator outputs a control signal in response to a comparing result between the comparison voltage and a voltage output by a power supply. The electronic switch includes a first terminal receiving the output of the comparator, a second terminal connected to a reference voltage, and a third terminal connected to ground. The LED includes an anode connected to the reference voltage, and a cathode connected to the second terminal of the first electronic switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.