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Automatic Fan Speed Controller using NTC Thermistor and BJT

HA

harinrona

·

Created Oct 23, 2026

·

Updated Oct 23, 2026

Schematic preview for Automatic Fan Speed Controller using NTC Thermistor and BJT
Details

Components

4


Schematic

Yes


Simulation

Transient analysis


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Components used

Components used
4 components
NameManufacturerMPNCountType

Resistor

Generic

—

2

Official

2N2222A NPN Transistor

Generic

2N2222A

1

Official

Dual Rail Power Supply

Generic

—

1

Official

Thermistor

—

—

1

Official

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

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