555 PWM calculator
CI
CircuitSim
·
Created Oct 3, 2026
·
Updated Oct 3, 2026
Preview will appear once the owner saves the schematic
Details
Components
5
Schematic
Yes
Simulation
Transient analysis
Copies
Not copied yet
Tags
No tags yet.
About this circuit
Set a 555 oscillator’s frequency and duty cycle with separate charge and discharge resistors. Admin-maintained calculator source: preserve the reviewed electrical topology and designators; layout, labels and mapped defaults remain editable.
Components used
Components used
5 components
NameManufacturerMPNCountType
Try this circuit yourself
Free to get started. No download — runs in your browser with a full SPICE engine.