mur860 alternative

triast · 7th September 2006, 07:00 AM

Hi all,

I'm building gaincone psu, the diagram I used is from BrianGT m3886 manual.

Could I replaced the diode bridges with IN4007?
I can't get mur860 in my country.

morpheus82 · 7th September 2006, 07:25 AM

i will not do it...mur860 is a 8A diode, 1n4007 is a 1A diode...it will burn if you pump up the volume...the most important thing you have to look is the voltage and amp rating, at least 300V and 8A, the ultrafast specific is just for fanatics...

triast · 7th September 2006, 07:34 AM

raikkonen, thank you for your help. I will get 8A diodes for my psu, what's the effect to the sound if not using mur860?

morpheus82 · 7th September 2006, 08:24 AM

if you are using chip amps the effect is not so much, because they have great psrr...that kind of diodes help reduce noise in supply voltage, but this is still an open question, someone says it's better to use normal diodes...otherwise a good alternative will be adding a 100nF cap in parallel with each diode, simple, economic and works!

Leolabs · 7th September 2006, 03:36 PM

try BYR29series

7th September 2006, 07:00 AM	#1
triast diyAudio Member Join Date: Aug 2006	mur860 alternative Hi all, I'm building gaincone psu, the diagram I used is from BrianGT m3886 manual. Could I replaced the diode bridges with IN4007? I can't get mur860 in my country.

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7th September 2006, 07:25 AM	#2
morpheus82 diyAudio Member Join Date: Oct 2004	i will not do it...mur860 is a 8A diode, 1n4007 is a 1A diode...it will burn if you pump up the volume...the most important thing you have to look is the voltage and amp rating, at least 300V and 8A, the ultrafast specific is just for fanatics...

7th September 2006, 07:34 AM	#3
triast diyAudio Member Join Date: Aug 2006	raikkonen, thank you for your help. I will get 8A diodes for my psu, what's the effect to the sound if not using mur860?

7th September 2006, 08:24 AM	#4
morpheus82 diyAudio Member Join Date: Oct 2004	if you are using chip amps the effect is not so much, because they have great psrr...that kind of diodes help reduce noise in supply voltage, but this is still an open question, someone says it's better to use normal diodes...otherwise a good alternative will be adding a 100nF cap in parallel with each diode, simple, economic and works!

7th September 2006, 03:36 PM	#5
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	try BYR29series

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