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.
It won't work. Sebi's circuit is a good one, but if I understand you correctly, you don't have any optoisolators or a PNP transistor.
The bottom line is, you can't make a motor reverse directions with just 2 NPNs controlled from a parallel port.
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