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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 70,645 of 72,318   
   jurb6006@gmail.com to Perhaps I didn't   
   Re: sci.electronics.basics, Would You Li   
   07 Jul 18 12:34:47   
   
   >"** Here comes the same old bullshit plus a massive context change."   
      
   Friendly as ever.    
      
   >"> >"** For that to be the case, YOU have to know in ADVANCE what the   
   > acceptable ESR readings are for each electro you need to test. "   
   >   
   >   
   > Not so much.   
   > "   
      
   Didn't YOU recently say if they read bad they should be replaced before they   
   shit all over the PC board ? (I think i put it more eloquently)   
      
   And, are you saying that being subjected to more ripple current DOESN'T   
   shorten the life of a lytic ?    
      
   Another thing I've discovered it that in much modern shit, the value means   
   very little. In fact on a PC motherboard or the PS of a TV they might have a   
   bank of 5 3,300 uF on a certain output, and the ALL go bad.    
      
   Well I learned that people will put up with screen defects and shit like that   
   and it could need a screen or a Tcon, but they didn't mention that, and when   
   that problem shows up of course it is your fault.    
      
   So instead if replacing all 5 of those caps, mounting them nice on the board   
   and cutting the leads off, I would pull one and throw a 1,000 in there with   
   the long leads attached. One of my bench caps. And get this, my sister's   
   monitor, I found a bad cap    
   in its PS and didn't have one. It maybe was a couple of 2,200 uF or whatever   
   and all I had was an old 100 uF of the proper voltage rating. I put it in and   
   told her that I will have to order the right caps for it and it is bound to   
   fail again, just let me    
   know when it does. Been about 5 years now.    
      
   >"> Yeah, double or even triple the secondary voltage and the condition   
   > of the caps becomes quite important.   
   >   
      
    ** Insane crap !!!!!!!!!!!!!!!!!!!!!!!!!!.   
      
    All the HV electros would EXPLOD if you did that. "   
      
   Perhaps I didn't write it right. some of those things have doublers, maybe   
   even triplers, I am not talking ME doubling or tripling anything. In such a   
   configuration the ESR of all the lytics are effectively in series and that is   
   what makes it more    
   important. In such a case each got the same abuse all its life and is the same   
   age so I would recommend replacing them all even if only one is bad.    
      
   >"** 2 digit resolution is hardly excessive. "   
      
   Still not needed. I got no digit resolution. Just a bar graph display. In fact   
   I am thinking I don't even need that many segments. So 8 might do and then I   
   just use 2 quad comparators. Open collector outputs would work and probably   
   have less power drain.    
      
   >"** The fool's device exist only in his imagination. "   
      
   Same with the Wolksvagon until Hitler came along.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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