Using 5 V relays, this circuit can be used as a control shield for microcontrollers. The circuit uses relays, and the motor voltage is independent of the control voltage.
This circuit was obtained from a 1978 Practical Wireless. It generates a low frequency, low...
This conventional LED effects circuit uses integrated CMOS. Today we can achieve the same effects...
This small blocking oscillator for approximately 1000 Hz was found in an American documentation from the...