9 Volt Power Supply

Comments

• Franklin Posts: 4,747

  2008-09-25 03:19 edited 2008-09-25 03:19

  Please add a subject line to your post. Use the pencil in the upper right.
  
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  - Stephen
• Mike Green Posts: 23,101

  2008-09-25 03:23 edited 2008-09-25 03:23

  1) Please edit your thread and add a subject. Use the pencil icon in the upper right hand corner of the message window.
  
  2) RadioShack sells a nice, compact 6V AC adapter (#273-1763). There's also a 9V adapter (#273-1768) if you prefer that.
  Both would require a 9V battery clip (#270-325) that you'd have to solder onto the leads from the AC adapter.
  Be aware that the colors on this battery clip are for connecting to a battery, not substituting for one and they're
  backwards for what you want (black = +9V, red = - 9V). Make sure you check that it's wired correctly and has the right
  voltage polarity (with a multimeter) before you connect it to your homework board.
• jwalker Posts: 2

  2008-09-25 10:10 edited 2008-09-25 10:10

  Thank you.
• erco Posts: 20,250

  2008-09-25 17:26 edited 2008-09-25 17:26

  Excellent call on that classic mistake, Mike. It's a rite of passage to destroy something the first time one uses a 9V battery clip as a PS connector, assuming that red is always positive. If followed, your sound advice keeps the magic smoke inside the chip, where it does the most good.
  
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  ·"If you build it, they will come."