80W, 24V regulated power supply

Discussion in 'The Projects Forum' started by nak5ive, Jun 18, 2009.

  1. nak5ive

    Thread Starter New Member

    Jun 18, 2009
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    To start, let me say that this site has given me a wealth of information that i consider irreplaceable. so for that, i say thank you to all that contribute.

    I need to construct a standalone 80W, 120V AC to 24V DC power supply for a 1974 Fender Rhodes electric piano. I have already rebuilt it's preamp and am using a purchased power supply but am having tons of problems. I believe my current power supply is in some way causing phasing and/or ground issues with the preamp and makes it go haywire when plugged directly into a speaker. Anyhow, i figure a basic and generic power supply should do the trick. The original equipment is definitely vintage, so that means no ICs.

    I found this schematic for a simple power supply:
    http://www.aaroncake.net/circuits/supply6.asp

    I also found this 80W transformer to use:
    http://www.hammondmfg.com/pdf/5c0022-23.pdf

    My biggest problem is finding a regulator that will output 24V and handle 3.3A. As far as i can tell, they don't exist. (i could be wrong, and probably am)

    Any advice on a good solution? perhaps a different schematic? I'm open to all kinds of ideas. Keep in mind this is an audio application, so clean power is a must!
     
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