This is a different circuit for a component from the past, the zirconium arc lamp used in projectors. The circuit is from an August 1972 Radio Electronics magazine.
This circuit was obtained in the Audio Handbook of the National Semiconductor of 1977. The...
This touch switch is from a 1978 publication. The circuit should not be powered by a...
This limiter circuit with included preamplifier was found in an American documentation from 1975....