With this circuit it is possible to obtain a voltage of -5 V from a 5 V source. The circuit is from Radio Electronics from May 1982. The maximum current is around 80 mA.
This different configuration of AM radio with push pull detection and amplification provides good...
This light intensity meter is from a 1978 Texas Instruments optoelectronics manual. The...
This circuit fires a xenon lamp being powered by a 300 V battery. The circuit is from a Radio...