17-21

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

Open in the lab Embed The simulation runs as a demo that pauses after two minutes; open it in the lab to keep going.

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What's inside

7× Battery
4× Switch
4× Relay
2× Lamp
3× Fan
Measured with Multimeter

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By Kieran McCoy
Saved September 24, 2026
259 views
Page: dcaclab.com/circuits/87640-17-21

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<iframe src="https://dcaclab.com/experiments/87640-17-21/iframe" width="560" height="410" frameborder="0"></iframe>

Cite: McCoy, K. (2026). 17-21. DCACLab. https://dcaclab.com/circuits/87640-17-21

17-21

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