Circuit Simulator

Build and test electronic circuits with realistic physics (Kirchhoff's Laws, Ohm's Law)

Components

Select a component to place on breadboard

Hand Tool

Select & interact

Battery

DC 1.5V - 12V

AC Supply

AC 120V / 230V

Resistor

10Ω - 1MΩ

LED

6 colors available

Diodes

Standard/Zener/Schottky

Capacitor

Polarized 10μF-1000μF

Active Buzzer

Piezo buzzer max 12V

Passive Buzzer

Frequency-driven speaker

Breaker

Resettable 100mA-5A

Fuse

One-time 100mA-5A

Switch

SPST toggle

Button

Momentary tactile

Transistor

NPN BJT

Voltage Regulator

7805/7809/7812/LM317

AND Gate

2-input logic AND

OR Gate

2-input logic OR

XOR Gate

2-input logic XOR

NAND Gate

2-input logic NAND

NOR Gate

2-input logic NOR

XNOR Gate

2-input logic XNOR

NOT Gate

Logic inverter

Wire

0.01Ω/pixel resistance

Instructions

• Hand tool: Pan, zoom, and interact with circuits
• Drag components to move (wires disconnect)
• Right-click: Delete or repair components
• Wire: Connect + and - terminals only
• DC battery: Constant voltage output
• AC supply: Sinusoidal alternating voltage
• Diodes: One-way current flow (anode → cathode)
• Add resistors to limit LED/component current
• Logic gates: Connect inputs and outputs to perform boolean operations

Zoom: 100%

Hand Tool: Drag components, click switches, right-click to delete. Scroll to zoom, drag to pan.