Spell check got me and I didn’t cross check. GOSDO should be GPSDO but I bet everyone figured that out.
Steve WB0DBS > On May 3, 2020, at 7:18 PM, Steve - Home <[email protected]> wrote: > > No remote sensing on these I’m afraid. Agreed the 14.1 will work for most > “mobile” kit but I do have some instances (GOSDO) as mentioned where the 12V > is more critical. Once the 12V units arrive I’ll dissect one of each type and > see what turns up. I’m aware of the voltage/current issues and just wanted to > see if I could get some use out of supplies already in hand. > > Thanks to all who replied! > > Steve > WB0DBS > > > >> On May 3, 2020, at 11:53 AM, Dave B via time-nuts <[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 >> >> >> If they have remote sensing, you can do stuff with that too. Else, trace >> out the cct around the voltage setting pot, there will probably be some >> fixed resistor at each end, one or other will move the high or low point as >> you need. (Lower values = greater adjustment range.) >> >> BUT! Note, that though you can usually lower the output voltage, you will >> not get any extra current as that is limited by the transformer design and >> capabilities. >> >> Similarly, if you raise the output voltage, you will need to de-rate it's >> current output ability, so as not to exceed it's power capability. Don't >> go too far from nominal (especially lower voltage) as the control loop >> regulation may misbehave under some load conditions. >> >> In any case, 14.1 is OK for most "12V" kit, especially anything that is >> intended for use in a vehicle, where the engine running battery voltage can >> often be up near 15V with modern vehicles and battery chemistry. >> >> 73. >> >> Dave G0WBX. >> >> >>>> On 03/05/2020 17:00, [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 >> >> -- >> Created on and sent from a Unix like PC running and using free and open >> source software: >> >> >> _______________________________________________ >> 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.
