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Relay Coil Controlled by NPN

An interactive diode, transistor, LED and resistor circuit built in the DCACLab online simulator by Haridass Puthussery Mani.

What's inside

2× Battery
5× Resistor (10 kΩ, 100 kΩ, 330 Ω)
1× LED
2× Diode
2× Transistor
2× Switch
2× Relay

Tags

Diode Transistor LED Switch Relay Battery Resistor

About

By Haridass Puthussery Mani
Saved June 17, 2026 · updated June 19, 2026
843 views

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Tags: Diode Transistor LED Switch Relay Battery Resistor