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.
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.
I'm hoping to convert some leftover 140mm PWM case fans (standard 4-pin computer connector) to a quiet room air circulator, with proper pulse-width speed control instead of voltage based.
I haven't found much on exactly what the supply needs to be, i.e. ground, +12v, pwm, rpm sense, but what...
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