Doug . . .
On Sun, 22 Aug 2021 00:12:57 +0000, "Doug J" <vk2xlj@...>
wrote:
Hello Group,
Another solution for a 10VDC supply is to use a DC-DC converter, connect it to 13.8V shack supply and adj the converter to 10V. You can pick these converters up from China for only a few dollars each.
They do work if you don't get them close to their rated output. I used
one to try to get some cells in a 40V battery pack back to life. While
my plans didn't work out, it did put out 40V (I think it was rated to
be able to put out a lot higher voltage). I dialed in the voltage with
the tiny screw potentiometer. I think there was even a current limiter
pot.
It wasn't expensive, as you said.
But since there are ready made AC adapters that put out 10V, I would
think using one of them would be less trouble than fixing up something
to work from various parts. Not that this idea is a bad one, but with
other, easier options, it might not be what the OP might want to do.
Of course, he will have to choose the solution and it doesn't matter
which route he takes as long as he solves the problem.
I do think it's a shame that lots of the newer electronics don't have
readily available schematics. That may change in time if the
governments implement a right to repair law that includes readily
available circuit diagrams. But who knows if it will happen (some
states have some laws in effect now) and if it will include everything
we'd like to see. I'm not wanting to get into a political discussion
here so let's be careful on further discussion of laws.
Donald KX8K
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