Lab

18, 19, 20, relays

An interactive battery, switch, relay and fan circuit built in the DCACLab online simulator by Owen Ruhl. Open it to run the simulation and measure it.

Preview of 18, 19, 20, relays
Open in the lab Embed Run the circuit right here. To edit it in the full lab, sign in; free accounts have a time limit there.

Teaching with circuits?

Create a classroom, give your students a circuit to build, and review what they submit. Try it free with one classroom and up to 5 students.

Try the free classroom demo

What's inside

  • 6× Battery
  • 3× Switch
  • 3× Relay
  • 2× Lamp
  • 3× Fan

Tags

Fan Relay Battery Switch Lamp

About

By Owen Ruhl
Saved February 26, 2026
926 views
Page: dcaclab.com/circuits/86530-18-19-20-relays

Embed this circuit

<iframe src="https://dcaclab.com/experiments/86530-18-19-20-relays/iframe" width="560" height="410" frameborder="0"></iframe>

Cite: Ruhl, O. (2026). 18, 19, 20, relays. DCACLab. https://dcaclab.com/circuits/86530-18-19-20-relays

Related circuits