The circuit presented was suggested by Texas Instruments in an opto-electronics manual. The transistor can be the BC548 and the supply voltage depends on the application.
Using a V/F converter this circuit was found in the June 1991 issue of Radio Electronics magazine. The...
Amphenol Sine eco | mate ™ connectors can be purchased from Mouser Electronics for a variety of...
This amplifier for sound equipment was found in the Philips Databook of 1990. The circuit can be...