This circuit for a 16-channel infrared transmitter was found in the August 1984 issue of Radio Electronics magazine. The circuit is powered by a 9 V battery.
This stereo preamp uses only two germanium transistors. The circuit was found in old documentation using...
I found this circuit in a 1989 American publication called Electronics Handbook. The circuit...
This is the power source suggested in the old European publication for the CB19635E watch. The...