This circuit operates at a frequency of 80 KHz and modulation up to 60 kHz. The circuit is from 1980s documentation. The PUT is an uncommon component today.
Found in an Elektor from the 90s, this circuit simulates a rotary switch that provides a BCD...
This crystal shortwave radio can tune signals up to the VHF range of analog TV (which no longer...
This circuit was found in a 1987 edition of the United States' Hands On Electronics magazine. The...