555 Sawtooth Oscillator

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

About this circuit

Charge the timing capacitor with approximately constant current to obtain a nearly linear ramp.

Components used

Components used
5 components
NameManufacturerMPNCountType

Capacitor

Generic

—

4

Official

Resistor

Generic

—

3

Official

DC Voltage Source

Generic

—

2

Official

555 Timer

Generic

555

1

Official

PNP BJT

Generic

—

1

Official

Try this circuit yourself

Free to get started. No download — runs in your browser with a full SPICE engine.