OK I would like to find out if it is possible to replace one X-former as drop-in for another in switching power supply. I wan't to take a BFG 800 watt #E231049 VIKING B-2 (TOP-T614) X-Former and drop it in a CoolMax AP-550 (V-550) #EI-33B X-Former . EI-33B has bad secondary. Thanks for any Help in Advance Scott.
-
-
Re: HI! My first post on the forum "bear" with me please and Thank's.
Highly unlikely that these two are compatible. The coolmax V-550 is not a very high quality unit. The newer LongYi built units have ERL-35 size transformers, so this is a older Sunyo built unit. Better off fixing or using the BFG, which is a Topower built unit. They are generally pretty good after a recap.
-
Re: HI! My first post on the forum "bear" with me please and Thank's.
Post some pics of both supplies. The BFG is likely to be using two transistor forward topology which is completely incompatible with the half bridge the coolmax uses.
EI-33 and "550W" do not go in the same sentence. It'll do 400 in a good day, but that's with a configuration that is never ever used in a cheap power supply. Most of the times they max out at 250.
But what do you mean about "bad secondary" ? If it reads shorted on your multimeter... that's what it should do. You can find EI-33 by the loads in most noname junkers, all are compatible, but the windings are of varying degree of quality.A working TV? How boring!Originally posted by PeteS in CAComment
-
Re: HI! My first post on the forum "bear" with me please and Thank's.
I had 170 volts on primary of the cool max and nothing on output. I do have 5 volts on other rail no 12 v .Replaced caps some resisters and diodes on secondary.This includes the two stps20l45ct and sb1645ct. I thought maybe the bfg x-former could be converted or something. I guess I can wait to get another x-former down the line no rush, have other projects in the works. Thank's Scott. I'll Be Back.Comment
Comment