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.
This variable high frequency oscillator circuit was found in an old English documentation. The...
We found this circuit in an old American documentation. The components are from that period and...
Found in American documentation from the 1980s, this circuit makes use of components of the time,...