The ZN416E integrated circuit is uncommon today. It consists of a complete radio, like the one found in a 90s Popular Electronics. The power is from a single battery.
Found in an American publication from the 1980s, this circuit modulates an LED Laser for the...
Suggested by an old RCA manual, this circuit makes use of the period components. Data for the...
This interesting amplifier for frame antenna for the medium wave range was found in a Popular...