OR Gate Circuit Diagram using Transistors
Let’s construct a simple OR gate circuit using transistors to demonstrate the required components and the circuit’s functioning.
Components Needed
Resistance, NPN transistor, power supply in voltage, wires, switches
Working of the Circuit
- When both switches (inputs A and B) are in the OFF state (LOW), there is no power supply to the bases of the transistors.
- As a result, both the base-to-emitter and base-to-collector junctions of the transistors have a voltage lower than the threshold voltage of a diode.
- This causes both transistors to go into their cutoff state, acting like open switches and blocking current flow.
- With no current flowing through the transistors, the output remains in a low voltage state (LOW), turning off the LED connected to the output.
OR Gate
This article will explain the concept of OR gate operation in digital electronics along with its truth table, logic symbol, switching circuit diagram, etc. The OR gate is one of the main building blocks of Digital Logic Circuits.
Here, we will cover OR Gate using transistors with the working of the circuit and its applications, advantages, and disadvantages, accompanied by solved examples and answers to frequently asked questions.
Table of Content
- What is OR Gate?
- Types of Logic OR Gates
- Components Needed
- Working of the Circuit
- Advantages of OR Gate
- Disadvantages of OR Gate
- Applications
- OR Gate Examples