[time-nuts] Power Supplies

[Taka Kamiya]

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 <steve-krull at cox.net> 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 <eb at telight.com> 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
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.


_______________________________________________
time-nuts mailing list -- time-nuts at lists.febo.com
To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.