- Published in issue 12/1994 on page 105
Fast switch-off for power amplifier
The 'Medium power a. f. amplifier uses a relay for the switch-on delay to suppress annoying switching plops. When the amplifier ts switched off, however, the relay, owing to hysteresis, rematns actuated for a short time, which results in switch-off clicks. Although these are harmless. they are annoying. The present circuit makes them things ofthe past.