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 circuit was obtained in an Electronic Design from the 80's. It has the adjustment of the gain...
This circuit was obtained in a 1977 magazine, but it can still be easily assembled, as the...
This circuit uses only passive components and must be tuned to the operating range. The circuit is...