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Discussion Starter #1
I have a Caline power brick with multiple voltages and outputs, but thought I could use one for an alternate pedalboard. I had the parts sitting around, including a suitable low-profile plastic case, so I put a power brick together yesterday. I used a 1.5A/9VAC wallwart to power it. Rectified, 9VAC turns into roughly 12.5VDC, which satisfies the requirement of 3-pin regulators for >2V more coming in than the regulated output voltage. I used 100ma regulators for 6 outputs, and 1A regulators for 2 more high-current outputs (white jacks), all conforming to the tip-ground/outside-pos standard.
If I had different jacks, or been willing to tolerate drilling holes closer together, I probably could have provided 10 lower-current outputs, but I figured the 6+2 was enough for my needs.


 

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Mark, do you find the tabs on the 1A regulators enough to dissipate the heat on their own in a sealed enclosure? I usually like to mount them to a larger metal surface just to be safe but maybe I'm being overly cautious. I guess quite often a 1A source is feeding a load that really only needs have that much current/power, so there's a safety factor there.
 
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Discussion Starter #4
Mark, do you find the tabs on the 1A regulators enough to dissipate the heat on their own in a sealed enclosure? I usually like to mount them to a larger metal surface just to be safe but maybe I'm being overly cautious. I guess quite often a 1A source is feeding a load that really only needs have that much current/power, so there's a safety factor there.
I was thinking about that, and your safety considerations are well-placed. I am still mulling over popping some holes into the cover. But realistically, I can't see using either of the higher-current output for anything that's much beyond 200ma.
 
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