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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.

detector transistor

An FM detector is usually built inside an IC. 50 years ago it was two diodes and a transformer.
An AM detector is a diode, not a transistor.
 

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