Electronic Temperature Indicator
₹629 – ₹959
- Product Code : LGKT120
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This temperature meter uses the precision micropower centigrade sensor IC LM35. The output voltage of the IC is linearly equal to +10Mv per degree centigrade. The temperature level is displayed through an LED readout. The circuit uses the precision temperature IC LM35. This three-pin transistor-like IC give output linearly equal to +10mV per degree rise in temperature. It can measure temperature between -4 degree to +110 degrees centigrade. Its related type LM34 is the Fahrenheit sensor and its output is equal to -10mV per degree Fahrenheit. The output of IC LM35 is directly given into the input of the display driver IC LM3914. It is a monolithic integrated circuit with 10 active low outputs that can drive 10 LEDs directly without a current limiting resistor.
The internal circuitry of the IC adjusts the current passing through the LEDs. The input of LM 3914 is very sensitive. Here only 6 outputs are used to drive 6 LEDs. More LEDs can be included in the remaining outputs if required. As the IC LM35 senses temperature rise, LEDs one to six light up.
- Dimensions (cm) LxWxH: 15 x 15 X 7
- Weight (kg): 0.5
- Power supply: excludes battery, includes 12V adapter if required with the kit