This simple injector circuit can actually be powered by voltages from 3 to 9 V. The frequency is given by C1 which can be between 4.7 and 10 nF. The CMOS can also be 4011.
Found in a 1967 Delco documentation, this circuit can deliver power from 40 to 50 W at 8-ohm load....
This circuit allows you to use the parallel PC interface to control LEDs. The circuit was found in...
This traditional multivibrator configuration uses an LDR as a sensor. The circuit emits sound when...