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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.

Latest reviews

Useful circuit but to make it more perfect and save some milliamps increase R3 120 ohm to 1K2 because 1mA is enough to keep the TL431 going.

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