The presented circuit uses a PNP transistor, which can be the BC558. Observe the polarity of the supply. The circuit is suggested by Texas Instruments opto-electronic documentation.
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...