LED Flasher 2

Normally one LED bulb will take about 12mA and 2.5V.But in this circuit it will need only 1.5v and 1.5mA to flash 4 LED Bulbs.LM 3909 double up the voltage and store it in the Capacitor. Then the Capacitor discharge the stored voltage through the LED Bulbs with in a short period of time. This is how this Circuit is working. In this circuit 4 LED Bulbs will flash every 1.5 seconds.

LED Flasher

This circuit needs only 1.5V Battery. Bulb will flash every one second. This circuit work under a small current of 0.6 mA. So this is very efficient flasher circuit that I have ever found.

Low cost Tube Light Inverter

This is a low cost Tube Light inverter circuit that can be made very easily. In this circuit you don't have to bother to construct a inverter transformer. you can easily get a 230V to 9V-0-9v step down transformer as the inverter transformer.

Multi Vibrator

This circuit consists of two NPN transistors. When one bulb is on the other is off, when the other bulb is on the first bulb is off. This is how this circuit is working.you can add up to 4 LED bulbs to one side and all together you can add 8 LED bulbs to this circuit. But keep this in your mind those bulbs should be in parallel and also remember this you should add equal amount of LED bulbs to the both sides.