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.
you only need an ohmmeter. If it conducts with positive on the base is it NPN, otherwise it is PNP. You can easily find the base because it is the only lead that conducts to both the other leads. You would need the data sheet to know which is collector and emitter.
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