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I get quite a few Keyboard Cables and Plugs, but until recently did not know what to do with them.  Then I had a flash – I build a lot of things, but do not really want to deal with a power supply.  Why not have one central power supply and plug in each project.  I took 3 dual keyboard ( and mouse ) plugs and wired them in series.  The supply ( again from a computer ) provides +5 volts and + and – 12 volts.  This is good power for most of what I do.  The cables are soldered into the project and plug in when I need power.  The only limit is that I would keep the power to a few hundred ma.
 
I get quite a few Keyboard Cables and Plugs, but until recently did not know what to do with them.  Then I had a flash – I build a lot of things, but do not really want to deal with a power supply.  Why not have one central power supply and plug in each project.  I took 3 dual keyboard ( and mouse ) plugs and wired them in series.  The supply ( again from a computer ) provides +5 volts and + and – 12 volts.  This is good power for most of what I do.  The cables are soldered into the project and plug in when I need power.  The only limit is that I would keep the power to a few hundred ma.
  
*[http://www.instructables.com/id/Almost-a-Power-Supply/ Almost a Power Supply]
 
  
 
=Computer Power Supplies as Bench Top Power=
 
=Computer Power Supplies as Bench Top Power=

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