This SCR relaxation oscillator was found in an 80's Electronic Design. It flashes a small incandescent lamp in frequency that depends on the capacitor.
This power supply provides 12 and 24 V voltages for experimental FM stations. The total current...
This circuit was found in a September 1992 Popular Electronics. The magazine no longer exists, but the...
Found in a 1993 Electronics Hobbyst Handbook, this passive circuit can be used with common...