Voltage regulation

Discussion in 'General Electronics Chat' started by nolacagsr, Mar 9, 2011.

  1. nolacagsr

    Thread Starter New Member

    Nov 17, 2009
    7
    0
    Hello everyone... First of all I am a rookie when it comes to electronics just scratching the surface. I have an AC/DC Variac. It works fine but I was given a task of making it into a constant power source that will provide 26vac @ 5amps. I have been looking into different things to accomplish this. I was just wondering if anyone has any suggestions.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Better to buy off the shelf than build.
    Take a look at this:
    http://www.bgmicro.com/PWR1278.aspx
    150W, 24v (adjustable ~21v to ~27v), 6.5A. $15.40 + shipping.
    [eta]
    Oops, this is DC out, and you need AC. Sorry.
     
    Last edited: Mar 11, 2011
  3. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
    1,758
    98
    I wonder who "tasks" out these sort of assignments?
     
  4. Jaguarjoe

    Active Member

    Apr 7, 2010
    770
    90
    OP wants AC, not DC.

    OP states "constant power". Is that truly constant power (watts) or constant volts, or constant current (amps)?

    I don't know how deep your pockets are, but this might do what you need:

    http://www.hammondmfg.com/pdf/PB0230.pdf

    DC would be magnitudes easier to work with.
     
    Last edited: Mar 9, 2011
  5. thomas206

    New Member

    Mar 9, 2011
    2
    0
    Mine is at 24 and it is constantly burning out so we always buy new fuses....it's funny one always off sets the other and make it complicated!
     
  6. russ_hensel

    Well-Known Member

    Jan 11, 2009
    818
    47
    Variac is not a good device for this sort of thing, a fixed transformer might be a better place to start. Variacs are auto transformers and do not issolate you from the 120v ( or 240 ) line.
     
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