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Old August 21st, 2008, 08:53 PM
waynehoskins waynehoskins is online now

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Default Re: intercom power supply

Quote:
Originally Posted by wyatt20019 View Post
so how do i set this up? can i just solder the hot wire to pin 2 of an XLR head? or do i have to have the capacitor thingy?
Hot, no. That goes to the transformer primary along with neutral.

No matter what kind of supply you use, you'll end up needing beefy filter capacitors: if a homebrew supply, to filter ripple; if a wall-wart or cheap supply, because they don't have much filtering if any inside there. I used a pair of 2000-mike electrolytics to provide 4000 mikes , and that should be pretty fair. That's just a plain linear supply: transformer, diode bridge, capacitor, and that's usually pretty good; but I threw the 317 on the end to clean it up even more.
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