Input clamping structure for sound quality improvement in car-radio class-AB power amplifier design
US8970280B2 · kind B2 · utility
1Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Feb 12, 2033 |
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.