Temperature Controller


Posted on Oct 29, 2012

A thermistor (RI) is compared with a reference (R2) in a Wheatstone-bridge circuit. Comparator Ul`s output goes high


Temperature Controller
Click here to download the full size of the above Circuit.

, which triggers U2. U2 is a delay of about 25 s. After 15 s, LED1 lights, U3 actuates, triac TRl triggers, and turns on a hot water pump. This system was used with a hot-water heater.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Voltage Controlled Panner
Field Strength Meter
0-50V 2A power supply with LM10C
Long duration timer
Beat Balance Metal Detector
Data Based IQ Modulator
Stereo TV Decoder Circuit
Morse Code Decoder Circuit
Xbee doorbell project
Low phase noise voltage controlled oscillator circuit
Frequency crystal oscillator circuit diagram of 10kHz-150kHz



Top