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1. 08:24 AM - Re: Re: 12v to 9v converter (Robert L. Nuckolls, III)
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| Subject: | Re: 12v to 9v converter |
At 09:31 PM 12/16/2022, you wrote:
>
>
>Jim Merrill wrote:
> > Edit- I just saw these-
> >
> https://www.amazon.com/NOYITO-Terminal-Voltage-Regulator-Module/dp/B08BZG8MZ8/ref=sr_1_4?crid=1KV3C1L94CT9P&keywords=lm7809&qid=1671204614&sprefix=lm7809%2Caps%2C122&sr=8-4
> > any advantage to these over the voltage regulator by itself?
>
>Yes, indeed. The 7809 version of that is exactly what you want: all
>the necessary components neatly packaged on a small board. You
>probably couldn't source the parts for those modules for what
>they're charging for them.
>
>After you screw down the terminals good and tight on your wires, put
>a few drops of superglue on them so they won't vibrate loose on you.
Bingo. Good find. As long as a common ground doesn't prove
problematic, you won't find a simpler/cheaper solution.
Those terminal strips are particularly friendly for terminating
stranded wire . . . they have a flat surface that is driven
down onto the strands as opposed to the end of a screw.
Vibratory forces are not transferred from wire to screw.
Thread locking is not necessary.
However, they do lack wire support. expose minimum
length of strands so that insulation tucks up tight to
terminal strip body. Dab of E6000 will take care of
the vibrational-flexing issue.
Those regulator assemblies are well populated with
capacitors that go to noise issues. They might
well be quieter than a battery. Bet you didn't
know that batteries generate noise . . . exceedingly
tiny but not zero.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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