This circuit was found in an 80's General Electric documentation. The circuit uses uncommon components today like the PUT. Unijunction admits equivalent.
August 2016 - Mouser announced the availability of the new capacitors high voltage HV series...
This circuit was found in an English documentation from the 90's. The circuit has the frequencies...
This circuit is from a Radio Electronics from October 1963. The LDR and transistors are from the...