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 decoder circuit 3 of 8 was found in a publication for PCs from 1992. The circuits are TTL and...
This circuit consists of a current regulator that can be used in battery chargers. The...
This interesting circuit records a few seconds of audio signals, reproducing them in a small...