Open-circuit detecting circuit
US7064553B2 · kind B2 · utility
2Cited by
3References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Oct 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an open-circuit detecting circuit, a current detecting circuit converts current flowing from a driving circuit to a load to a voltage. A comparator circuit compares the voltage with a reference voltage and outputs a signal according to a result of the comparison to a D flip-flop. An open-circuit is determined based on an output of the flip-flop, which is outputted when a clock signal indicating a falling edge of a PWM signal outputted from a PWM signal generating circuit is inputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.