This wireless infrared remote sound transmitter is from an article published in the August 1988 issue of Radio Electronics magazine. The circuit can be built using modern, higher-power LEDs.
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...