Protection circuit for driving capacitive loads
US8330505B2 · kind B2 · utility
0Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2011 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jun 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0045
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A detection circuit is coupled to an output terminal of a driver circuit. The detection circuit includes a comparator to compare a signal at the output terminal to a reference signal corresponding to a signal that would be generated if a capacitive load having a relatively high capacitance value were connected to the output terminal. Output of the comparator is sampled at a predetermined time after the driver circuit provides the drive signal. An error signal is generated when the sampled output indicates that the capacitive load having the relatively high capacitance value is actually connected to the output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.