Using a 4046 PLL this circuit generates rectangular signals in three wavebands that depend on the capacitors used. The circuit is from a Radio Electronics from December 1989.
This Maxim Voltage Supervisory integrated circuit can be obtained from Mouser Electronics. It has...
Any FET can be used on this 80's circuit. Power can be supplied with batteries. The output is...
March 2017 - Coilcraft SLR series inductors for currents up to 100 A can be obtained from Mouser...