Typically, there are small resistors at the power supply between the output and sense terminals to prevent the voltage from rising if a sense wire opens up.
73, Scott K9MA ---------- Scott Ellington --- via iPad > On Dec 24, 2019, at 5:39 PM, Bob McGraw K4TAX <[email protected]> wrote: > > Yes, but one screw-up on the remote sensing system and it will take > advantage of the voltage overhead on the pass transistors and likely wipe out > every piece of equipment. I strongly do not advise it. And you make a > valid point for NOT using remote sensing. > > 73 > > Bob, K4TAX > >> On 12/24/2019 3:22 PM, Jim Rhodes wrote: >> I have thought about doing that. Just requires a 2 wire hookup with small >> gauge wire. But I run all of my small items like the remoterig box, LP-pan >> box, VHF/UHF rig and so forth off of the main supply and if I have a larger >> than anticipated voltage drop on rig power cable the voltage on the other >> tings could go fairly high. The power supply is a HB thing with at least a >> 50 amp capacity and plenty of voltage overhead before pass transistors. >> (Used to run 2 HF rigs before downsizing.) >> >> >>> On Tue, Dec 24, 2019 at 2:25 PM Rose <[email protected]> wrote: >>> >>> First, it would require some basic technical skill ... (;-) >>> >>> 73 >>> >>> K0PP >>> >>> On Tue, Dec 24, 2019, 13:20 Karin Johnson <[email protected]> >>> wrote: >>> >>>> Why hasn't anyone used remote sensing at the radio voltage input? >>>> As far as I know all of the Astron supplies don't have external sense >>>> wiring. Many so called professional grade high current supplies provide >>>> For external connection of the voltage sense back to the regulator chip. >>>> I've toyed with this idea a bit but haven't had the time dig in to the >>>> Astron supply I have. If this were implemented then one could maintain >>>> 13.8 volts or whatever you desired at the radio power supply inputs, >>>> Regardless of the current draw. >>>> >>>> Karin Anne Johnson K3UU >>>> >>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:[email protected] >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to [email protected] >>>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [email protected] >>> >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
