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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Hopefully a hypothetical assuming cannot repair a small SMPS in a 1U case.
Assuming 3 of those little "plug-top" , I don't know the generic name, "phone charger" SMPS can have the usual fudge of changing 2 or 3 resistors each to give +/- 15V, .2A and 5V , .5A and mains safety issues taken into account. Would there be an EMC or cross-coupling problem due to 3 free-running oscillator SMPS running inside one box, often the case that 3 would be togrther in close proximity charging 3 phones at the same time. |
#2
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![]() "Nutcase Kook = Classic Pommy ****wit " Hopefully a hypothetical assuming cannot repair a small SMPS in a 1U case. Assuming 3 of those little "plug-top" , I don't know the generic name, "phone charger" SMPS can have the usual fudge of changing 2 or 3 resistors ** For get that ****ed idea. each to give +/- 15V, .2A and 5V , .5A and mains safety issues taken into account. ** 15 volt and 5 volt SMPS supplies are easy enough to find. You can remove the PCBs from their cases and wire the outputs as you please. Would there be an EMC or cross-coupling problem due to 3 free-running oscillator SMPS running inside one box, ** No. Wot a ****ing RETARD !!!!!!!!!! .... Phil |
#3
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Would there be an EMC or cross-coupling problem due to 3
free-running oscillator SMPS running inside one box, often the case that 3 would be togrther in close proximity charging 3 phones at the same time. It's unlikely their transformers would have sufficient stray flux to produce interference. If you're worried, position two of them at right angles, and the third not-in-line with either. Please learn how to write a short, simple, declarative sentence! Learning how will give you a great sense of satisfaction. |
#4
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On Apr 9, 7:30*am, "William Sommerwerck"
wrote: Would there be an EMC or cross-coupling *problem due to 3 free-running oscillator SMPS running inside one box, often the case that 3 would be togrther in close proximity charging 3 phones at the same time. It's unlikely their transformers would have sufficient stray flux to produce interference. If you're worried, position two of them at right angles, and the third not-in-line with either. Please learn how to write a short, simple, declarative sentence! Learning how will give you a great sense of satisfaction. Mr. Cook's question was stated just fine, we have some grouches here this Monday morning. There is a slight chance that the oscillators would try to sync up, it depends on how close they are in free-running frequency and also on how much intercoupling there is between the electronics, as well as any possible flux coupling between the transformers. Really hard to predict! |
#5
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![]() "hr(bob) = google monkey Mr. Cook's question was stated just fine, ** Only fine if you are an autistic, dyslexic ****wit. There is a slight chance that the oscillators would try to sync up, ** Like there is a slight chance the moon is made of green cheese. **** off - moron. |
#6
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#7
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Please learn how to write a short, simple, declarative sentence!
Learning how will give you a great sense of satisfaction. Mr. Cook's question was stated just fine, we have some grouches here this Monday morning. I the it any way reader let and right you it's like ? So all to write guess unscramble Mr Cook, PLEASE LEARN HOW TO WRITE simple, clear sentences. It's a necessary skill. When someone offers you sound advice, don't ignore it. |
#8
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![]() "William Sommerwerck" Mr. Cook's question was stated just fine, we have some grouches here this Monday morning. I the it any way reader let and right you it's like ? So all to write guess unscramble ** ROTFL !! ( see, I do say nice things sometimes .. ) ..... Phil |
#9
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(see, I do say nice things sometimes ...)
So why do you get so angry? Is it psychosis? Or are you just playing the "angry old man"? It's okay to criticize. You don't have to jump down people's throats doing it. |
#10
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On 4/10/2012 6:53 PM, Phil Allison wrote:
"William Sommerwerck" Mr. Cook's question was stated just fine, we have some grouches here this Monday morning. I the it any way reader let and right you it's like ? So all to write guess unscramble ** ROTFL !! ( see, I do say nice things sometimes .. ) .... Phil Hey Phil !! Are you Ok man ?? I'm getting worried about ya :-) Rheilly P |
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