Interactive NPN Transistor — Lattice & Circuit

Emitter (n⁺) — Base (p) — Collector (n) visualization. Toggle base current to see flow.
Emitter (n⁺)
Base (p)
Collector (n)
Circuit (VCC, RC, Base drive)
6V
560Ω
0.4x
IC ≈ 0.00 mA
IB ≈ 0.00 µA
Emitter e⁻
Base e⁻
Si lattice
V CC R C A R B V in V out n + n p

Basic Computer Logic Circuit

Main Idea: This transistor circuit is the foundation of all computer logic - it's basically a switch controlled by electricity!

How It Works

Input Signal → Transistor → Output Signal
Small voltage IN controls Large current OUT

Computer Connection

  • Binary Logic: Input HIGH = Output ON, Input LOW = Output OFF
  • Digital Gates: Multiple transistors create AND, OR, NOT gates
  • Memory: Transistors can store 1s and 0s
  • Processing: Millions of these switches do calculations
Input: 0V (OFF) → Output: LOW
Input: 5V (ON) → Output: HIGH

Key Components

  • Transistor: The electronic switch
  • Base: Control input (like a light switch)
  • Collector/Emitter: Main current path
  • Resistors: Control current flow
Bottom Line: Your computer has billions of these tiny switches working together to process information, run programs, and display this text!
This simple circuit is the building block of all digital technology