Hence, a 1KΩ resistor is used in the circuit. A 1♟ capacitor is connected between pins 6 and ground.The output is taken from pin 3 and is given to the base of a transistor.Īdvised to use a current limiting resistor for base of the transistor. The other end of POT is left open.Ī 10KΩ thermistor is connected between pins 7 and 6. A 10KΩ POT is connected between supply and pin 7 with wiper of the POT connected to pin 7. It is configured as an astable multivibrator. The circuit is based on good old 555 timer IC.
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