This circuit was found in the 1992 Radio Electronics Handbook. It is used to test VCR recording heads. It can also be used for other purposes.
This sophisticated power supply for the laboratory of the maker or professional repaired was found...
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single-step motor...
This circuit for high power xenon lamps was found in the November 1974 issue of Radio Electronics...