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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 killjoy

  1. K

    How to make battery backup for circuit?

    sir u mean like this? **broken link removed**
  2. K

    How to make battery backup for circuit?

    bump* bump* bump*
  3. K

    How to make battery backup for circuit?

    hello sir eric. sir can u make me a schematic where to position the multitester. so i can really know when my battery is not discharging when the 12v is connected. please thx.
  4. K

    How to make battery backup for circuit?

    ah sir last question. will the battery supply immediately after the 12v is off?thx
  5. K

    How to make battery backup for circuit?

    hehehe thanks a lot sir.
  6. K

    How to make battery backup for circuit?

    now thats clear to me. ^_^ who cause the diode to reversed biassed?
  7. K

    How to make battery backup for circuit?

    ive inserted an image. why cant see it?
  8. K

    How to make battery backup for circuit?

    the 12v supply current to the regulator, so if you cut off the 12v supply then the battery will supply?or they both supply current to the regulator? can you explain it to me?
  9. K

    How to make battery backup for circuit?

    would this circuit work?
  10. K

    How to make battery backup for circuit?

    is this circuit fine for back up supply? **broken link removed**

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