Voltage divider circuit is. Before we begin adjust the potentiometer so that the led is off when there is no heat applied to the thermistor and on when heat is applied to the thermistor. R o nominal resistance resistance at temperature t 0 is 25 c or 298 15k.
Ntc thermistor symbol.
The circuit compromises of a voltage divider circuit and output on and off switching circuit. Power supply 6v dc. R o nominal resistance resistance at temperature t 0 is 25 c or 298 15k. For temperature sensing using an ntc thermistor the resistor r1 is chosen based on the temperature range and the ntc s value.
