Automatic Fan Speed Controller using NTC Thermistor and BJT
HA
harinrona
·
Created Oct 23, 2026
·
Updated Oct 23, 2026

Details
Components
4
Schematic
Yes
Simulation
Transient analysis
Copies
Not copied yet
Tags
No tags yet.
About this circuit
The author hasn't added a description yet.
Components used
Components used
4 components
NameManufacturerMPNCountType
SPICE netlist
* ************************************************** * Generated from CircuitSim Schematic ************************************************** R_TH1 NC_1 NC_2 'max(1m,10k*exp(1*3950*(1/(25+273.15)-1/(25+273.15))))' ************************************************** * Simulation settings ************************************************** .tran 100u 100m 0 .end
Try this circuit yourself
Free to get started. No download — runs in your browser with a full SPICE engine.