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Simplistic NJFET RIAA
Simplistic NJFET RIAA
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Old 30th March 2013, 06:44 PM   #9581
Salas is offline Salas  Greece
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Simplistic NJFET RIAA
Quote:
Originally Posted by buzzforb View Post
Dont know anything about pcb design, but reason i chose ground plane was strong adherance of DAC folks. They seem religious about those things in their loe noise, low distortion world..
Its about other speeds and needs there, they use it as a shield because they radiate pulses. Yours worked well enough so no worries. When a Kelvin sense wide band supply is sticking next to the phono in a combo pcb we better define the gnd return nodes IMO. I will fully test when time comes so to be zero issues anyway. BOM, iron, hook up, music. If not I will scrap it back to square 1.
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Old 31st March 2013, 11:46 AM   #9582
merlin el mago is offline merlin el mago
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Default Low MC pre-pre

How much current draws the Low MC pre-pre? what fuses value between the PSU & the Low MC pre-pre?
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Old 31st March 2013, 12:13 PM   #9583
Salas is offline Salas  Greece
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Simplistic NJFET RIAA
It draws 2xIDSS. Fuse? Why?
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Old 31st March 2013, 01:19 PM   #9584
merlin el mago is offline merlin el mago
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To protect the Low MC pre-pre?
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Old 31st March 2013, 01:29 PM   #9585
stajo is offline stajo  Sweden
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Simplistic NJFET RIAA
14 mA. I bet such a fuse costs more then the whole circuit
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Old 31st March 2013, 01:41 PM   #9586
merlin el mago is offline merlin el mago
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Hey stajo you are welcome.
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Old 31st March 2013, 01:43 PM   #9587
stajo is offline stajo  Sweden
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I am honored
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Old 31st March 2013, 02:06 PM   #9588
merlin el mago is offline merlin el mago
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I will use 100mA
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Old 1st April 2013, 04:17 PM   #9589
nicoch58 is offline nicoch58  Europe
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my DIY folded strudel
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Old 2nd April 2013, 03:27 AM   #9590
Salas is offline Salas  Greece
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Simplistic NJFET RIAA
You run strong bias. I see it charred at the edges. Turn your B+ down a bit and center at test point better next time.
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