Transistor Logic Basics: Buffer, NOT, AND & NAND (Part 1 of 2)

Build Circuits With Rich – Transistor Logic Basics (Part 1 of 2) In this lesson, we break down how transistors are used to build logic circuits from the ground up. If you’re new to electronics, this is a great place to start. We cover: • NPN transistor basics (2N2222) • Using a transistor as a switch • Buffer circuit • Inverter (NOT gate) • AND gate using transistors • NAND gate explained • Truth tables and simple calculations This is Part 1 of a 2-part series. 00:00 Introduction 00:27 Inverter theory 04:33 Datasheet 11:50 Buffer and theory 24:59 Go to the lab! 25:06 Inverter circuit 27:53 Buffer circuit 29:47 AND Gate theory 31:49 NAND Gate Theory 33:38 AND Gate Circuit 34:58 NAND Gate Circuit 📘 Full lesson notes and diagrams: https://buildcircuitswithrich.com 📺 All videos: https://buildcircuitswithrich.com/videos Circuit Simulations: Buffer: https://www.tinkercad.com/things/jpGC... Inverter: https://www.tinkercad.com/things/73Gp... AND Gate: https://www.tinkercad.com/things/7vFO... NAND Gate: https://www.tinkercad.com/things/hJ3H... ⚠️ Safety Reminder: Always double-check your wiring before applying power. These lessons use low-voltage circuits, but mistakes can still damage components. 👍 If this helped you understand transistor logic, consider subscribing for more beginner-friendly electronics lessons. #electronics #transistors #logicgates #nandgate #beginner electronics