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  1. B

    12V AC adapter to 5V

    Hi, I am building my own digital photo frame. I am using a Haier 7" LCD TV for the screen, which requires a 12V input, and the SanDisk Digital Photo Viewer (SDV2-A-A30), which requires only 5V of power. I understand I could possibly use a 5V regulator, but I don't know where to insert that into...
  2. B

    Wire Kit for Battery

    Can anyone tell me how to wire this kit for battery use? (Please don't say read the PDF data sheet. Trust me, I have.) I would like to use 3 AAA batteries.
  3. B

    Convert DC Power Jack to Battery

    I have a PCB which has a spot for a DC power jack, with three pins, but i'd like to use a 9V battery instead. Can anyone help me out on which pins are positive and negative?
  4. B

    Electronic Music Box

    Is there any sort of PCB out there that will store just one song and only play that song when turned on? I'm trying to build an electronic music box, and need to get some sort of PCB or music player that is small and will allow me to put the song of my choice on it (not record, but copy via...
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