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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.

Recent content by martin fox

  1. M

    PIC project for relay control with voltage hysterysis

    Perfect, thanks! Put a 1K pull up resistor and now its switching sharply!
  2. M

    PIC project for relay control with voltage hysterysis

    I was wondering about that but wasn't sure, will give it a go, thanks.
  3. M

    PIC project for relay control with voltage hysterysis

    Thanks, I dont think its interference since its only been tested on the bench, no compressor. I find that the output is not changing suddenly from low to high, it seems to gradually go in an analogue fashion. I have got the required amount of hysterysis OK.
  4. M

    PIC project for relay control with voltage hysterysis

    Hi all, This is my first post on here as I just joined the forum! I need to make a small controller that will switch on a 12V relay based on the input voltage from a sensor. Its to control a small compressor in my rally car for pneumatic gear change actuation of the sequential gearbox from a...

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