Electronic Components Kit LM324 Temperature Indicator Kit Thermistor DIY Parts Training Accessories

Condition : New
Type : Voltage Regulator

Electronic Components Kit LM324 Temperature Indicator Kit Thermistor DIY Parts Training Accessories

Feature:
Item name: LM324 Temperature Indicator Kit

Board size: 62*50mm

Power supply: 5V

Product description:

This circuit is mainly composed of two integrated operational amplifiers LM324. One LM324 contains four identical operational amplifiers. The circuit uses two LM324 to form an 8-stage voltage comparator. Each operational amplifier is connected to a voltage comparator. The reverse input end of the comparator uses a series resistance voltage divider,

The voltage is connected to the reverse input terminal of the voltage comparator step by step from low to high. The thermistor is a negative temperature coefficient thermistor. The higher the temperature, the lower the resistance. The thermistor is connected in series with a fixed resistance value resistor, and its series partial voltage is connected to the same direction input terminal of the voltage comparator. When the temperature rises, the resistance value of the thermistor decreases, and the series voltage on the thermistor increases. When the voltage exceeds the voltage at the first reverse input terminal, the voltage comparator outputs a high level, and the corresponding LED lights up. The higher the temperature, the more voltage comparators output a high level, and the more LED lights up, indicating the temperature. The adjustable resistance R1 can adjust the range of temperature indication.

Note: It's diy kits. Need to solder by yourself.

Due to the light and screen setting difference, the item's color may be slightly different from the pictures.

Please allow slight dimension difference due to different manual measurement.

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