NOT gate logic circuit is important for any sensor based system. Basically we construct it using micro-controller. but here I'm using a transistor and a Switch.
So let's follow this steps and apply this technique to get inverting output. It will be a great learning project for understanding the basics of transistor.
The assemble cost will be less because we are not using microcontroller.
Materials Required :
- · Transistor(BC-547)
- · GP board/ Breadboard
- · jumperwire
- · power supply
- · Switch
- · LED
Step 1: Circuit Connection
Connect the Transistor in voltage divider bias. In base connect a switch as show in diagram. Connect the LED +ve pin to the corresponding junction of transistor by follow the above diagram.
Here I use a breadboard for this purpose.
Step 2: Connect Power Supply
Give 5volt power supply to the transistor.
Step 3: Let's Check It
When the Switch is 'ON' ,the LED will be OFF ; otherwise it will be ON .
Hope you learned basics of transistor operation and realized the NOT gate.