Similar story....
I was using one of those small modules abundant on Amazon and eBay. Buck
converter and drop out board. It was noisy so I put a ferrite bead on output
side. One worked ok. Added another and that put the board into full
oscillation and it outputted 37V into a DUT destroying it. (It was set to 5v)
---------------------------------------
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Sunday, May 3, 2020, 12:26:30 PM EDT, Steve - Home <[email protected]>
wrote:
Thanks Ed, that was another solution I was considering. I’ve got a few LMs in
a drawer, I’ll have to order a few LTs.
Steve
WB0DBS
> On May 3, 2020, at 11:02 AM, ed breya <[email protected]> wrote:
>
> If you have a supply with something north of 15V, and you'd like to make 12V
> battery type voltage, it's easy to add an external solution with a low
> dropout three-terminal regulator to take it down a bit and still get good
> regulation. Look at LT1085 family, for example.
>
> Ed
>
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