Anyone know if this 12v ps is RFI-clean? "12 Volt 47 Amp Power supplies" See picture here: http://swap.qth.com/view_ad.php?counter=866425 It looks like some sort of modified surplus server PS. I have
I'd need to see more of what's inside and the specs. Any commercial supply should have both ripple and noise specs and in 0.1 or 0.10% although those particular figures would be *very good* Unfortuna
Doc, I've said it before and I'll say it again: unless a power supply is designated specifically for communications applications, assume that it is NOT "clean enough" for communications usage. The un
I was always certain that it was a switcher but some models are oddly RFI-quiet and others a nightmare. I was hoping someone might recognize it and have direct knowledge. I have owned analog supplies
I purchased a 40A lab supply at a very good price, (one Doc mentioned earlier) with digital read out it took a bit of testing but it turned out to be well regulated, and clean. Which BTW is also a sw
Switcher noise is most prominent on the HF bands. Dale told you. It will almost certainly be noisy. 73, Jim K9YC _______________________________________________ RFI mailing list RFI@contesting.com ht
Roger, Very good comment. I think the key word in your message is "lab". While not specifically intended for communications apps, lab applications can be very demanding as well. Good point and worth
Excellent and very helpful summary Dale! It may be worthwhile submitting that as an article to QST - such could save many Hams, especially new Hams, a lot of grief. And last I knew they will even sen
I am having to replace a 50V 20 amp Ameritron unregulated supply with something better regulated. I got a fairly cheap 48 V 22 amp switcher -- but knowing what they're like, I also "won" "buy it now"
There was a flood of 50v 50a switching supplies from commercial servers on the market a while back, they were pretty cheap. A bunch of Hams reported using them and found them to be rficlean, but I co
Thanks Agreed. This was actually a fairly expensive supply listed at $300 on sale for $99. The output voltage is adjustable and when set to 13.8, stays at 13.8 from zero load up though 30 amps which