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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.

Recent content by brobl

  1. B

    Multiplexing circuit help

    thanks for the response, duffy! The supply I need to power the fans is 12V. I would need to use the 12V as the supply to the decoder then, correct? Thanks for the hint on the LED resistors, that makes more sense. EDIT: I can change the fan to be 6V if needed. I'm just concerned about...
  2. B

    Multiplexing circuit help

    Hey all, I'm trying to figure out a way to multiplex three circuits(12V, 0.5A MAX) using 2 LEDs from a DSP evaluation kit as the decoder bits. When the LEDs turn on, the voltage change is a little over 1V (2.5 - 3.6). I'm stumped as to what to do with these specifications. Any help would be...

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