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Old 4th December 2008, 05:29 AM   #1
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Join Date: Sep 2004
Location: MN
Default LM317K upgrade?? Higher Current??

I have a large mixing console that uses a Pair of LM317K TO-3 type Adjustable V-regs for the +/- 17V rails. The mixer draws about 1.25 amps from each rail. pretty close to the 1.5amp rating of the 317K device.

I need to replace both regs as a power spike killed them. So i am wondering before i place a purchase, if there is a drop in repalcement rated for a bit more current?? maybe 2 amps or so just to increas the margin.

Early revisions of this supply had a pass device for each side as well at the 317K but at some point they revised the supply and took that part out and changed the board.

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Old 4th December 2008, 06:08 AM   #2
Puffin is offline Puffin  United Kingdom
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LM338, 5Amps? Check pin outs though
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Old 4th December 2008, 11:46 AM   #3
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YES!!! that looks to be a pin for pin drop in replacement. specs look nearly identical! Thanks!!!

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