Feature
Size:5.8*3.7cm
Power supply voltage:DC 5V
Function introduction
RP1, R1, R2, R3 and RT in the circuit form a temperature measuring bridge. When the temperature is below the preset temperature, the potential of pin 2 of UA741 is higher than that of pin 3, pin 6 of 741 outputs a low level, LED1 is on, and the buzzer does not sound, that is, no alarm. When the temperature rises, the resistance value of RT drops 741. The voltage of pin 2 drops with it. When the voltage of pin 2 is lower than the voltage of pin 3, pin 6 outputs a high level and starts to alarm. LED1 goes out
Package includes
1 x DIY KIT
Additional information
| Weight | 0.014 kg |
|---|
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