Author Topic: Observatory Power supply ?  (Read 253 times)

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Apophis

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Re: Observatory Power supply ?
« Reply #15 on: Nov 02, 2019, 18:23:57 »

NoelC

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Re: Observatory Power supply ?
« Reply #16 on: Nov 03, 2019, 10:38:46 »
Thanks Duncan
I'm interested you put a scope on the output of a step down converter and it was clean.  Have been using a 12-5V converters for a pi and for a usb powered hub quite successfully but wasn't sure if they were clean. Haven't got a current meter on the supply; so no idea how close to its maximum it's running.  But you know how it is; you just keep slapping another camera or focuser on the system until suddenly you start losing connection when it slews.
What's the ripple on the brick like?

Noel
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The Thing

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Re: Observatory Power supply ?
« Reply #17 on: Nov 03, 2019, 10:47:28 »
The brick is not bad, some of my others e.g. the on that came with the 12v usb3 hub are very notchy. I want to get a higher voltage brick as that will keep the input to the stepdown converter steadier as loads vary. I have a 19v one also Tosh, but need to use the oscilloscope to check the output.
¯\_(ツ)_/¯ (Gallic shrug :))
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