Amplification circuit
US5347230A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1992 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Jun 17, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0244
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplification circuit for power amplification of an audio signal or other signal includes a main power source line for supplying a driving power to a load, a switching element inserted in the main power source line for turning on and off the main power line, a smoothing circuit inserted in the main power line for smoothing an output of the switching element, a switching control circuit for switching the switching element with a variable on-off ratio in accordance with the level of an input signal, an auxiliary power source line capable of responding to changes in the level of the input signal at a higher speed than the main power line to supply power to the load, an auxiliary power supply amount adjusting element inserted in the auxiliary power line to adjust the power supply amount from the auxiliary power source line to the load, and an auxiliary power supply amount control circuit for controlling the auxiliary power supply adjusting element to cause power corresponding to any deficiency of power supplied by the main power source line to be supplied from the auxiliary power source line. The amplification circuit is driven by a power voltage capable of supplying substantially a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.