Simple Heat Sensor. Beginners’ Trial 1


Here is a 3 component Heat sensor. You can attach it with the heat generating devices like CD player, Inverter etc. When the heat inside the cabinet of the device increases above the set limit, buzzer beeps.
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Simple Heat Sensor


Excess heat in electronic devices can damage the delicate CMOS components and it is necessary to monitor the temperature in these devices. With this Five component circuit, you can monitor the temperature in the heat generating devices like CPU, Inverter, CD player, Amplifier etc. It gives a warning alarm, when the temperature inside the cabinet of the device exceeds the normal level. It uses an NTC Thermister as heat sensor. The circuit is too small enough to enclose inside the gadget.

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Heat Sensor


This simple circuit acts as a warning device whenever the temperature exceeds the preset level in its vicinity. It is an ideal circuit to monitor the heat generating devices like PC, Inverter etc.

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