3x3x3 LED Cube Circuit Based 555 and 4020 IC
This circuit is designed to drive an electronic 3x3x3 cube consisting of 27 LEDs. IC 4020 will drive the LED … Read more
Hi-fi Headphone Amplifier Circuit Based LF356 IC
This 1 Watt amplifier can be used as a headphone amplifier which has a pretty good quality. This amplifier circuit … Read more
Audio Controlled Mains Switch Circuit
This is the Audio Controlled Mains Switch diagram circuit that is most useful for audio or video equipment, where the … Read more
Digital logic touch switch circuit
Many circuits for TAPs (Touch Activated Pro-gramme switches) have previously been pub-lished. However, all of these required the use of … Read more
Car Battery Monitor Circuit based TCA965
In the wintertime periods, when starting is hard and headlamps need usually be used, it is all too easy for … Read more
Phaser Audio Circuit Based Op-Amp
In difference to lowpass or highpass filters, the gain of an all-pass filter resides constantly over the range of frequencies … Read more
Random running lamp circuit
If a number of the outputs of a shift register are fed back in a special style via an EXOR … Read more
IC audible logic probe circuit based LM339
Here is the old simple logic probe though with a different twist. Instead from representing logic status with LEDs, it … Read more
Slot Car Race Referee Circuit
Make this optoelectronic critic and end ever those squabbles over who actually won the competition. Install Q1 and Q3 phototransistors … Read more