Hi Unfortunately, there usually *is* a difference on each of these supplies. They “fine tune” them for one specific voltage. Since the magnetics are often done in house, there’s not much of a way to figure out everything that they have done.
The risk with any switcher is that they can (and sometimes do) fail in a dramatic fashion. That may involve taking out the gear they are attached to when they fail. I had that happen with one about two years ago. The device cost $120 to replace. What it killed was $400 and could have been up in the $10,000 range. Obviously this was not on the bench in the basement ….. Bob > On May 3, 2020, at 10:26 AM, Steve - Home <[email protected]> wrote: > > Hi Bob, > > Main reason was I already have a few 15V ones and would like to reuse them. I > have a gut feeling there’s not a major difference between the 12V and 15V > models. I may get one of the 12V ones and open it up and do a comparison. I > thought maybe someone had been down that path before. > > Steve > WB0DBS > > > >> On May 3, 2020, at 9:15 AM, Bob kb8tq <[email protected]> wrote: >> >> Hi >> >> If you want to do it and get full output, the change probably involves nasty >> things >> like swapping out inductors …. Likely cheaper to just spend the $16 and buy >> a brand new one at the right voltage. >> >> https://www.trcelectronics.com/View/Mean-Well/LRS-100-12.shtml >> <https://www.trcelectronics.com/View/Mean-Well/LRS-100-12.shtml> >> >> Given the risks of getting a mod “almost right”, it’s probably worth the >> piece of mind >> with a new one as well. >> >> Bob >> >>> On May 3, 2020, at 9:53 AM, Steve - Home <[email protected]> wrote: >>> >>> Has anyone found schematics for the Mean Well supplies? I have a couple of >>> 15V 7A ones that will adjust down to 14.1 and I’d like to get them down to >>> the 12-13.8 range. >>> >>> Steve >>> WB0DBS >>> >>> >>> >>>>> On May 3, 2020, at 8:43 AM, Bob kb8tq <[email protected]> wrote: >>>> >>>> Hi >>>> >>>> >>>>> On May 2, 2020, at 8:10 PM, Perry Sandeen via time-nuts >>>>> <[email protected]> wrote: >>>>> >>>>> Learned Gentlemen, >>>>> I personally dislike equipment that uses *wall warts* due to quality >>>>> concerns >>>>> One inexpensive way I've powered my Lucent equipment is using used laptop >>>>> power supplies. They're easily found at HamFests or on ebay. On Ebay >>>>> prices very wildly. If you buy 3 or 4 they can be $5 each shipped. >>>>> Another source to consider are the Mean Well SRPS at Jameco. >>>> >>>> If you are shopping for Mean Well supplies, TRC >>>> >>>> https://www.trcelectronics.com/mean-well >>>> <https://www.trcelectronics.com/mean-well> >>>> >>>> is a good place to shop. They are a (if not the) factory direct US >>>> distributor for the >>>> brand. That should eliminate the risk of getting one labeled Meen Well or >>>> Men Well or …. >>>> That sort of thing is pretty common on eBay. >>>> >>>> At least on the stuff I’ve shopped for, their prices are pretty good. They >>>> deliver next >>>> day on the cheap. Of course that’s probably because they are about 2 hours >>>> down the >>>> road from here :) >>>> >>>> Bob >>>> >>>>> They run from 55 watts on up with a wide range of voltages. They are >>>>> have spec sheets. Some SRPS's on ebay are cheap but their quality....... >>>>> Regards, >>>>> Perrier >>>>> _______________________________________________ >>>>> time-nuts mailing list -- [email protected] >>>>> To unsubscribe, go to >>>>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>>>> and follow the instructions there. >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to >>>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>>> and follow the instructions there. >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
