This is a 220V LED flasher circuit which is intended as a reliable replacement to thermally-activated switches used for Christmas tree lamp-flashing. This a low […]


Here’s the?3V lamp brightness controller circuit diagram used to control the brightness of the light bulb. You simply use the two AA or AAA battery […]

This is a motor speed controller circuit diagram built based MAX4295 from Maxim. By using this circuit, you will be able to control the speed […]

Here is the wailing alarm siren circuit diagram: Components List: R1,R5___________ 4.7K R2______________ 47K R3______________ 10K R4______________ 100K Rx______________ *see text C1,C4__________ 100uF/25V, electrolytic C2,C3__________ […]

This is a very easy and simple LED flasher with only three components: a flasher IC LM3909, a LED indicator and an electrolytic capacitor. The […]

This is the sound generator which will simulate British police car siren. The circuit is built using 2 pieces of timer IC 555 to generate […]

This is the circuit of LED color fade effect. Just like the name of the circuit, the light intensity of LEDs in this circuit will […]

This is running LEDs circuit which use timer ID NE555N and logic IC 4017N. IC 555 act as a multivibrator and generate frequency to be […]

This is a sound generator based on general purpose timer IC 555. A flip-flop circuit is included, so this circuit will give sound output and […]

Turn on and turn off your electrical devices using touch switch, so you can “play” your electronic devices more fun.. 🙂 . Touch switch don’t […]