This 50% active cycle TTL clock generates signals from 4 to 20 Hz. Its power must be supplied with 5 V and other frequencies can be generated with capacitor replacement.
This circuit can be used in a power grid remote control project with the coil according to the...
This rather sophisticated circuit does not recognize false tones, such as harmonics, and can be...
This small shaver bender circuit makes it possible to use 220/240 V shavers on 110 V networks. The...