Forums

Two diode vs four diode rectification

Started by Peter Percival July 30, 2019
On Wed, 31 Jul 2019 06:26:17 -0700 (PDT), jurb6006@gmail.com wrote:

>>> With a bridge, only 2 diodes on 4 work >> >> ** No, they all work. > >You got him on semantics, he probably meant "conduct". Sure they are working when they are conducting, but they are also working when not conducting. They are blocking. When they no longer block they are considered not working. > >>> So it preserve diode life. >> >> >>** False conclusion derived from a false assertion. > >Also ignores some logic on the subject. I won't be as mean as you but I will say it - ijiot ! YOU pick the diodes, they don't pick you ! And do you care if the diode is 50 cents or 60 cents ? > >I'm surprised I am even here. I did need a bit of a break though. Got any idea why the hell this Carver Receiver (MX-130) turns off the tuner when I turn off the speakers ? I decided to get away from it, and now I think I have a clue, it switches by relay, maybe somehow the 12 volt line is getting shorted... I'm just here to take a break from it.
I had a computer that would reset when I turned off the amplified speakers before turning off the computer. A small common mode filter on the amp cured the problem.
> >But thing is, I gotta write a book or something. These component values and all that, people give way too much attention to that.
Ya think? Generally speaking, they are damn serious when they talk about "absolute maximum values.." And when they specify a mosfet (for instance) at a current capacity that would cause its leads to melt, or unsolder itself from the board - well then they are lying.
Being French, I don't know the exact way you think !

default a écrit le 01/08/2019 à 16:24 :
> On Wed, 31 Jul 2019 06:26:17 -0700 (PDT), jurb6006@gmail.com wrote: > >>>> With a bridge, only 2 diodes on 4 work >>> ** No, they all work. >> You got him on semantics, he probably meant "conduct". Sure they are working when they are conducting, but they are also working when not conducting. They are blocking. When they no longer block they are considered not working. >> >>>> So it preserve diode life. >>> >>> ** False conclusion derived from a false assertion. >> Also ignores some logic on the subject. I won't be as mean as you but I will say it - ijiot ! YOU pick the diodes, they don't pick you ! And do you care if the diode is 50 cents or 60 cents ? >> >> I'm surprised I am even here. I did need a bit of a break though. Got any idea why the hell this Carver Receiver (MX-130) turns off the tuner when I turn off the speakers ? I decided to get away from it, and now I think I have a clue, it switches by relay, maybe somehow the 12 volt line is getting shorted... I'm just here to take a break from it. > I had a computer that would reset when I turned off the amplified > speakers before turning off the computer. A small common mode filter > on the amp cured the problem. >> But thing is, I gotta write a book or something. These component values and all that, people give way too much attention to that. > Ya think? Generally speaking, they are damn serious when they talk > about "absolute maximum values.." > > And when they specify a mosfet (for instance) at a current capacity > that would cause its leads to melt, or unsolder itself from the board > - well then they are lying.
On 8/1/2019 10:24 AM, default wrote:
...
> And when they specify a mosfet (for instance) at a current capacity > that would cause its leads to melt, or unsolder itself from the board > - well then they are lying. >
You think? I happen to stumble across a MOSFET in a TO-227 that was spec'ed for 300A & 1500W. How is that useful? Shouldn't they also say that it requires a LN2-cooled heatsink? And if you do need, say, a 15A MOSFET, how do you find it, what with all the bogus spec's?
Look165 is a Mad Frog wrote:

 DO NOT TOP POST !!!!! 

 It pisses usenet readers off !! 


> I was meaning that at half wave, only 2 diodes work. > For exemple : D1-D3 for +half wave, D2-D4 for -half wave. > In 2 diodes rectifier, the 2 always work. >
** No they do not !!! It's one diode at a time, like I already posted. Please go away you tedious wog fool. .... Phil
On Thu, 01 Aug 2019 10:24:28 -0400, default <default@defaulter.net>
wrote:

>On Wed, 31 Jul 2019 06:26:17 -0700 (PDT), jurb6006@gmail.com wrote: > >>>> With a bridge, only 2 diodes on 4 work >>> >>> ** No, they all work. >> >>You got him on semantics, he probably meant "conduct". Sure they are working when they are conducting, but they are also working when not conducting. They are blocking. When they no longer block they are considered not working. >> >>>> So it preserve diode life. >>> >>> >>>** False conclusion derived from a false assertion. >> >>Also ignores some logic on the subject. I won't be as mean as you but I will say it - ijiot ! YOU pick the diodes, they don't pick you ! And do you care if the diode is 50 cents or 60 cents ? >> >>I'm surprised I am even here. I did need a bit of a break though. Got any idea why the hell this Carver Receiver (MX-130) turns off the tuner when I turn off the speakers ? I decided to get away from it, and now I think I have a clue, it switches by relay, maybe somehow the 12 volt line is getting shorted... I'm just here to take a break from it. > >I had a computer that would reset when I turned off the amplified >speakers before turning off the computer. A small common mode filter >on the amp cured the problem. >> >>But thing is, I gotta write a book or something. These component values and all that, people give way too much attention to that. > >Ya think? Generally speaking, they are damn serious when they talk >about "absolute maximum values.." > >And when they specify a mosfet (for instance) at a current capacity >that would cause its leads to melt, or unsolder itself from the board >- well then they are lying.
It's interesting to test parts to see how much margin there is from the data sheet. Numbers like 5:1 are common. Ceramic capacitors can be over 20:1. I use "abs max 2 volt reverse" schottky diodes at -5, and 7 volt max PHEMTS at 15. A 12 volt max LM1117 regulator fails at about 60. Most mosfet gates blow out around 70. On the other hand, many mosfet power ratings are absurd fantasies. IR pioneered lying about that, and everyone else had to go along. https://www.dropbox.com/s/l1z8e64xawqgylf/Dpak_Resistors.JPG?raw=1 That Ohmite resistor is rated for 45 watts. -- John Larkin Highland Technology, Inc lunatic fringe electronics
>** All four diodes conduct - half of them during each half cycle.
You want to play words or electronics ?
>The claim about extending diode life was bullshit
I never claimed that. You probably quoted a quote.
Some Fucking Idiot calling itself jurb...@gmail.com wrote:
> > > >** All four diodes conduct - half of them during each half cycle. > > You want to play words or electronics ? >
** There is no mutual exclusion - you fucking moron.
> >The claim about extending diode life was bullshit > > I never claimed that.
** That is why I posted: "The claim" not " Your claim". I see you have a MASSIVE problem with following the context.
> You probably quoted a quote.
** You completely misread and misconstrued. Simply because YOU are a congenital, mental retard. FOAD anytime. ...... Phil
Try to understand that I'm French, so English is not my mother language.

Phil Allison a &eacute;crit le 14/08/2019 &agrave; 02:26&nbsp;:
> Some Fucking Idiot calling itself jurb...@gmail.com wrote: >> >>> ** All four diodes conduct - half of them during each half cycle. >> You want to play words or electronics ? >> > ** There is no mutual exclusion - you fucking moron. > > >>> The claim about extending diode life was bullshit >> I never claimed that. > > > ** That is why I posted: "The claim" not " Your claim". > > I see you have a MASSIVE problem with following the context. > > >> You probably quoted a quote. > > ** You completely misread and misconstrued. > > Simply because YOU are a congenital, mental retard. > > FOAD anytime. > > > > ...... Phil
You should just killfile Phil. He is a truly sick individual. He
suffers from some sort of mental illness. It is best to just ignore
him.
Eric

On Wed, 14 Aug 2019 11:06:58 +0200, Look165 <look165@numericable.fr>
wrote:

>Try to understand that I'm French, so English is not my mother language. > >Phil Allison a &#2013265929;crit le 14/08/2019 &#2013265920; 02:26&#2013266080;: >> Some Fucking Idiot calling itself jurb...@gmail.com wrote: >>> >>>> ** All four diodes conduct - half of them during each half cycle. >>> You want to play words or electronics ? >>> >> ** There is no mutual exclusion - you fucking moron. >> >> >>>> The claim about extending diode life was bullshit >>> I never claimed that. >> >> >> ** That is why I posted: "The claim" not " Your claim". >> >> I see you have a MASSIVE problem with following the context. >> >> >>> You probably quoted a quote. >> >> ** You completely misread and misconstrued. >> >> Simply because YOU are a congenital, mental retard. >> >> FOAD anytime. >> >> >> >> ...... Phil
et...@whidbey.com wrote:



> You should just killfile Phil. He is a truly sick individual.
** That is a very, very nasty thing to post - completely evil in fact. A massive lie in every possible way.
> He suffers from some sort of mental illness.
** The truth is that "Eric" is massively autistic and hence incapable of recognising an intelligent thought - cos he has never had one in his whole pathetic life. The retarded, lying POS top posts, ignores all context and makes an absurd "ad hominem" attack with no reason given. I bet he never even read what I wrote, or ever has in the past. Eric is a truly congenital fuckwit with no purpose being here or anywhere on the internet. FYI He has jut made himself a prize target for ANYTHING I care to post about him. .... Phil