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.
a high gain transistor with a IR -receiver (led) ? where the diode is reversed biased from collector to base of the transistor? if yes, then would there be any limitations?
A photo-diode would be better than an LED used as a makeshift photodiode. You'd still have to amplify it though, I'd use an opamp rather than a transistor amp. CDS photocells can be used as well depending on exactly what you need this for. A little more detail would be nice.
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