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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.
Do you have the mounting tabs of the LM317 regulators on the same heat sink or otherwise electrically connected? If so you have the outputs connected together. Not good if so. The mounting tab and output pin are one and the same.
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