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9th November 2004, 11:34 PM
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#1 |
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diyAudio Member
Join Date: Aug 2004
Location: Sydney
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LM3886 & MUR860 Diode Bridge
The MUR860 diodes have a maximum current output of 8A.
The maximum current output from a LM3886 is 11.5A. Are these diodes in a rectifier bridge still suitable if you are planning to get close to maximum power out of a LM3886? |
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10th November 2004, 04:42 AM
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#2 | |
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diyAudio Member
Join Date: Sep 2004
Location: Mumbai (Bombay)
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Re: LM3886 & MUR860 Diode Bridge
Quote:
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S. Roushon |
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10th November 2004, 06:11 AM
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#3 |
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Electrons are yellow and more is better!
diyAudio Member
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I suspect that 8A diodes will work pretty good. You don't take out 11.5 A continuously (the LM3886 won't handle it) and secondly, the music isn't DC current. Notice also that the diodes will share the current because you have four of them.
I have an option for TO247/TO220 diodes in my QRP02 amp just for flexibility. I my case I have also fuses which breaks long for before 11.5A
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/Per-Anders (my first name) or P-A as my friends call me |
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16th November 2004, 11:04 AM
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#5 | |
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Banned
Join Date: Mar 2003
Location: Lisbon, Portugal
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Re: LM3886 & MUR860 Diode Bridge
Quote:
Maximum ("non-repetitive surge current") is 100A. 
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16th November 2004, 03:42 PM
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#7 | |
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Banned
Join Date: Mar 2003
Location: Lisbon, Portugal
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Re: Re: Re: LM3886 & MUR860 Diode Bridge
Quote:
 Realistically, it can be considered the "peak repetitive forward current", 16A. ON Semi datasheet, page 2. |
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17th November 2004, 07:54 AM
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#8 | |
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diyAudio Member
Join Date: Jul 2004
Location: Wherever I hang my hat...
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Re: Re: LM3886 & MUR860 Diode Bridge
Quote:
Does "non-repetitive" mean that the diode is no longer in a good state to take any current after it has taken that surge??? 
__________________
"Everything should be made as simple as possible, but not simpler." - Einstein |
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17th November 2004, 08:01 AM
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#9 |
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Electrons are yellow and more is better!
diyAudio Member
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It means that you can't do it again and have a working diode. I think this diode will work just fine. Anybody who has blown a 8 A diode under normal conditions and with fuses?
__________________
/Per-Anders (my first name) or P-A as my friends call me |
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