Audio tracking pulse-width modulated power supply
US4405976A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1981 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Dec 16, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J1/102
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An audio signal tracking power converter has a master converter and a slave inverter which are connected in parallel to a dc power source that is to be converted and provide a first and second ac output signal. The first ac signal and the second ac signal are combined and converted to a dc signal that tracks the input audio signal. The master inverter is controlled by a free-running pulse generator which pulse-width modulates the first portion of the dc power that is converted to the first ac signal. The slave inverter is pulse-width modulated by pulses that result from the comparison of the audio signal that is to be tracked and a reference signal generated from the pulses from the free-running pulse generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.