Let us build a simple auto off LED lamp circuit using just a few passive components and an NPN transistor.You can use this circuit as a night lamp when going to sleep! When you touch the positive terminal of the…
Blinking LED With Single Transistor
It is possible to blink or flash an LED using just a single transistor. This interesting circuit makes use of a rarely used property of the transistor known as the reverse avalanche breakdown. Since this is a non-standard feature, this…
Touch Switch Using Single NPN Transistor
In this circuit project, I will show you how to build a simple touch switch using a single transistor. When someone touches the two endpoints in the circuit, the LED in the circuit lights up and it turns off when…
Simplest LED Circuit
In this basic project, we will create a simple LED circuit on a breadboard. This is a good project for the beginner as it will give experience in hooking up components, using a breadboard properly and also will demonstrate how…