Nowadays, LED is used everywhere, its used in display, in indicator and for decoration purpose also. But LED needs proper current, so if we connect LED direct to battery then it may get damage. So, in this post we have designed a Switch Mode LED Driver Circuit using Transistors. This circuit is simple as it […]
3V Battery Operated Lamp Flasher Circuit
In this article, we will explain about a simple and easy 3V Battery Operated Lamp Flasher Circuit. It is used to flash a lamp using only 3V supply. Usually, low voltage flashing circuits give low output current. However, this circuit gives high current output and therefore, it can drive a small lamp easily. The heart […]
LM3909 IC Based Square Wave Generator Circuit
Electronic projects often need a signal source and this signal can be a pulse or square wave. Therefore, a frequency generator is useful for these type of signal source. Here, we have used LM3909 IC which is simple with low power, it works well on small voltage and also the circuit is cheap and easy. […]
One LED Low Voltage Flasher Circuit using IC LM3909
Low voltage indication is very important, especially for battery operated circuits. Because battery can discharge anytime and so a simple indicator is required. Therefore, this One LED Low Voltage Flasher Circuit using IC LM3909 is designed. It uses only one LED and also uses minimum components and moreover, it works on very low voltage. Hence, […]
Simple 3.6V High Power LED Torch Circuit
This article is about Simple 3.6V High Power LED Torch Circuit. It uses a 3.6V battery and is easy to build and the circuit is very easy to understand. The circuit uses only LEDs, one resistor, a switch and a battery. So beginners can also try this circuit and moreover, this circuit gives strong light. […]
Simple Over-Temperature Warning Indicator Circuit
This circuit is for Simple Over-Temperature Warning Indicator Circuit using an LED. It is very simple and is with low cost as it uses few easily available components. The circuit turns ON an LED when temperature rises above a set level like 45°C – 55°C. Therefore, it is useful for basic thermal warning. This circuit […]