Author Topic: Blitzortung Red Build Complete  (Read 7199 times)

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Offline Cutty Sark Sailor

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Re: Blitzortung Red Build Complete
« Reply #25 on: August 15, 2013, 09:40:02 PM »
I have also wondered about these USB power supplies and how noisy they might be.
I am using one from an old Moto phone, but I decided to order one of these:
There were some fancy "audiophile" units in Germany but they were quite a bit more expensive.

Greg H.

I don't think 'noise' is an issue... but I didn't like the varying voltage. Even though it did not seem to affect the operation of my boards. And haven't measured real load... too lazy to open a line and stick a meter on. My gut and experience tells me a 1 amp supply is borderline, regardless. I think there are conditions that really spike that line, especially with strong triggers/interference that coincide with other things, like IP access or data sends for e.g..... What effect it has...if any...  I don't know. Lacking a scope, and being a retired tech, not an engineer, I can't tell.

And how I could divide 0.24 V by 0.6 and come up with 4 forward biased junctions shows you how rusty parts of me are.!!!   :oops:  Anybody else catch that error??? :lol: