Found in an Elektor from the 90s, this circuit makes use of current components. The input voltage depends on the relay.
This low-frequency relay oscillator was obtained from an article in Electronics Now magazine in...
This circuit generates a 1296 MHz signal from 100 or 1,000 kHz crystals. We found it in an...
This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at...