Found in a 1968 Mullard manual, this circuit can function as an infrared audio link. The transistors can be the BC548.
This 1-transistor circuit appeared in a February 1962 Radio Electronics. The coils for the...
This circuit came out in the American magazine Electronics Now, in a 1993 issue. The magazine no...
This antenna tuner was found in a 1995 publication in the 1993 Electronics Hobbyists Handbook. The coil...