Low-voltage, complementary symmetry class B amplifier arrangement
US4401950A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1980 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Dec 5, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3066
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low-voltage, complementary symmetry amplifier arrangement is disclosed which functions effectively on supply voltages down to one volt DC. The amplifier is especially suited for audio processing applications in hand-held personal electronics apparatus, such as pocket radio receivers. The circuit configuration is easily implemented in integrated circuit form and operates efficiently on class B operation with its attendant advantages. The amplifier arrangement is characterized by the use of current sources in the collector and emitter circuits of a differential amplifier and thereby employs current ratios instead of the more conventional voltage levels to selectively control the conduction of associated output devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.