Input clamping structure for sound quality improvement in car-radio class-AB power amplifier design
US9331644B2 · kind B2 · utility
0Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2015 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Jan 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45552
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A clamping circuit for a class AB amplifier includes a reference voltage circuit, four NPN Darlington transistors having inputs coupled to the reference voltage circuit, and outputs for providing four clamped voltages and a split NPN Darlington transistor having an input coupled to the reference voltage circuit, and four separate outputs for providing four AC ground voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.