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.
The circuit shown in the figure is suggested by National Semiconductor and makes use of an...
This circuit, suitable for tube equipment, was found in an old documentation. It uses a high...
This circuit is part of an integrated circuit tester published in an article in Radio Electronics...