Please explain me the LM35 circuit design

[daynadarlin]

lm35 circuit

Can someone explain the circuit for me, as i know nothing about this! haha need it urgently pls

 

[denz]

lm35 circuits

LM35 is a precision temperature sensor the circuit you posted sets the temperature in any level that will trigger the relay, the relay will be triggered if Q1
will saturate. VR1 a variable resistor sets the point of triggering the Q1 when the Vref will be equal to the output of the LM35 the circuit uses a comparator to compare the voltage reading of the LM35 and the Vref.

note: do not be confused on the output of the LM35 its output is in mV.