This simple circuit causes an LED to flash at times whose active cycle is determined by C1 and C2. Transistors can be BC548.
This circuit was obtained from an English magazine from 1976. The circuit operates two LEDs and...
Found in a publication from the 60's, this power supply has no regulation, but only current...
This circuit can use the LM148 and its more modern equivalents, generating a sinusoidal signal whose...