Electronics Help Care

Ramen Bairagee

Automatic fan controller

Automatic fan controller

Automatic fan controller:  This is a simple temperature controller circuit diagram. here used PTC C831 to control the room temperature.  this PTC works as a resistor. PTC resistor depends on temperature. this PTC is used in this automatic fan controller. Negative Temperature Coefficient (NTC) thermistors have less resistance at higher …

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Speaker Protection circuit diagram

Speaker Protection circuit diagram

Speaker Protection circuit diagram: This is a Speaker Protection circuit diagram. every amplifier needs this circuit. when the amplifier got any problem then this circuit disconnects the speaker. when the IC or transistor got a short circuit, then the voltage comes out from the audio output. to protect the speaker …

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