timer circuit

An interactive LED, transistor, diode and resistor circuit built in the DCACLab online simulator by Angelo Michel.

Preview of timer circuit

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

What's inside

2× Battery
7× Resistor (1 kΩ, 4.7 kΩ, 47 kΩ, 330 Ω)
2× Capacitor
4× LED
1× Diode
3× Transistor
1× Relay
Measured with Multimeter

Tags

Multimeter Transistor Diode Relay Resistor Battery Capacitor LED

About

By Angelo Michel
Saved March 09, 2025 · updated January 15, 2026
818 views
Page: dcaclab.com/circuits/80697-timer-circuit

Embed this circuit

<iframe src="https://dcaclab.com/experiments/80697-timer-circuit/iframe" width="560" height="410" frameborder="0"></iframe>

Cite: Michel, A. (2025). timer circuit. DCACLab. https://dcaclab.com/circuits/80697-timer-circuit

Related circuits