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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

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isalet

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Hi, I'd like some help in knowing how the following circuit works**broken link removed**, please explain step by step considering all the components in the circuit. I'd also like to know how I can interface the circuit with a seven segment display to read out the temperature. How can I set off a lower cut off point i.e some low temperature at which the fan is automatically switched off. Any help on any of these questions would be great
 
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