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AVCC shunt regulator question
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Yukotan  
#1 Posted : Thursday, April 15, 2010 3:22:31 AM(UTC)
Yukotan

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Just start my Buff II + Ivy III & everythings O.K. but just one question, that immediately rushed into the eyes: diode D2 on AVCC shunt reg. lights up as it have to be, lets say, but D1 is 5-6 times lesser, i.e. just very slightly light. Voltmeter reads 1.9v across DI and 1.75v across D2. PS for Buffalo is 5.0v. Do I have to rise it up to suggested 5.5 v ? Or do I have just close my eyes and open the ears?
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Russ White  
#2 Posted : Thursday, April 15, 2010 6:05:50 AM(UTC)
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I would indeed use 5.5V. But the brightness is not a critical factor in the least. :)
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Brian Donegan  
#3 Posted : Thursday, April 15, 2010 6:28:27 AM(UTC)
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This is actually normal behavior. The two LEDs are not performing mirror functions in the circuit, so have different brightnesses.
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glt  
#4 Posted : Thursday, April 15, 2010 8:12:37 AM(UTC)
glt

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Yeah, normal behavior. You can some some pictures of my avcc with 5v and 5.5v: http://hifiduino.blogspo...ecification-and-faq.html

The resultant voltage is >3.3 which according to ESS gives you slightly better DNR.

Edited by user Thursday, April 15, 2010 8:14:19 AM(UTC)  | Reason: Not specified
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Yukotan  
#5 Posted : Friday, April 16, 2010 4:24:22 AM(UTC)
Yukotan

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OK! Thank you for your replies! Will post my pictures & comments later on.
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loreliv  
#6 Posted : Saturday, April 17, 2010 2:21:37 AM(UTC)
loreliv

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help, do not run my new buffalo II

I have mounted, the power supply to Buffalo II
no load, the power supply for buffalo, supply voltage +5.5 V. when connecting the Buffalo II powering +1.75, and not turn the LED on Buffalo II, even when I turn potentiometer power supply, not increase the tension ... Why did this happen?

I have mounted, the power supply for IVY III, no load, the power supply of IVY III powering +14.98 and -14.98. when connecting the IVY III powering +10.90 and -1.41, even when I turn potentiometer power supply, not increase the tension ... Why did this happen?

I ask for help, afraid I sweat, I can not hear.
Thanks to all loredana
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