aestuo
New Head-Fier
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- Nov 25, 2006
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So I've been trying to build an AC adapter-powered CMOY. Because of the CMOY's virtual ground, these adapters need to be isolated - the AC side needs to be electrically isolated from the DC side by a transformer. I recently realized, after several fried chips, that the laptop power brick I've been trying to use is in fact a "switch-mode" power supply, which is probably not isolated and thus shorting out the virtual ground (i.e. not allowing the CMOY's ground to float at a voltage half-way between the + and - rails being put into the chip).
I want a good, regulated power supply, but I'm having trouble telling which might be "switch-mode" instead of "linear regulated," which are apparently isolated.
Will something like this solve my problems? Or something like this?
Does anyone have recommendations for cheap, linear-regulated power supplies for the CMOY? Note that I'm not grounding anything to the chassis and the DC jack is isolated, so that isn't what's causing the short.
I want a good, regulated power supply, but I'm having trouble telling which might be "switch-mode" instead of "linear regulated," which are apparently isolated.
Will something like this solve my problems? Or something like this?
Does anyone have recommendations for cheap, linear-regulated power supplies for the CMOY? Note that I'm not grounding anything to the chassis and the DC jack is isolated, so that isn't what's causing the short.