Push Button
A momentary normally-open switch. The circuit is open at rest and closed only while the button is held down. Releases back to open when you let go.
Properties
| Property | Description | Default |
|---|---|---|
| Label | Display name shown on the canvas | BTN1 |
| Contact resistance | Resistance when closed (Ω) | 0.1 Ω |
The push button has no additional configurable electrical properties — its behavior is purely mechanical (open / closed).
Simulation behavior
During simulation, click and hold the button to close the circuit. Release to open it. The change takes effect on the next solver tick, so the response is nearly instantaneous.
The button does not debounce. If you are testing debounce logic in a microcontroller circuit, each click counts as a single clean edge.
Current-flow particles in connected wires start and stop moving as you press and release the button.
Tips
- Use push buttons to trigger one-shot events — a brief press and release is a clean way to charge a capacitor, trigger a relay, or test a transistor switch.
- Label buttons clearly (e.g., "RESET", "START") so collaborators know what each button does in a shared board.
- Combine two push buttons with an SR latch (built from NPN transistors or logic gates) to build a simple set/reset memory circuit.