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.
Is there a threshold current below which a led emits no light? I have been playing with some white ones and I find that I can see the light generated by 1uA. Could a photomultiplier see the light generated by 1pA?
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