Single supply direct drive amplifier
US7183857B2 · kind B2 · utility
47Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driver amplifier operative from a single DC voltage supply, coupled directly to the output load without the need for DC coupling capacitors used for preventing DC reaching the output load. An onboard power supply generates a negative voltage rail that powers the output amplifiers, allowing driver amplifier operation from both positive and negative rails. Since the amplifiers can be biased at ground potential (0 volts), no significant DC voltage exists across the load and the need for DC coupling capacitors is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.