Very low power loss amplifier for analog signals utilizing constant-frequency zero-voltage-switching multi-resonant converter
US5479337A · kind A · utility
83Cited by
22References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1993 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Nov 30, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/2176
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high-efficiency analog power amplifier is disclosed. The amplifier utilizes pulse-width-modulation ("PWM") signals to operate electrical switching devices coupled in series across a d.c. power source. A resonant circuit coupled to the transistors periodically places zero and non-zero voltage levels across each transistor. The frequency and width of the PWM signals are relative to the components of the resonant circuit--enabling each transistor to switch off and on only when zero volts appears across the transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.