This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We found it in the September 1995 Electronics Now magazine.
This filter was found in documentation from the 90s. The cutoff frequency is 2900 Hz. Changes can be...
This circuit generates frequencies determined by R3 and C1. We found it in the Radio Electronics magazine...
Found in the July 1994 Electronics Now magazine, this circuit drives a relay up to 12 V depending on...