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Old 17th May 2009, 06:55 AM   #1
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Default PC900 / EC900 curves

anyone got a set of anode voltage/current curves for this little beastie? Yes, I have checked what Frank has available.... Yves, I recall you have worked with this one?
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Old 17th May 2009, 08:41 AM   #2
Yvesm is offline Yvesm  France
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Hi !

I've used that.

Click the image to open in full size.

said to be equivalent.

Yves.
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Old 17th May 2009, 08:45 AM   #3
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Talking exactly!

And so I figured you would have some idea of a useful operating point... or even may have developed some anode V/I curves!
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Old 17th May 2009, 08:55 AM   #4
Yvesm is offline Yvesm  France
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Added a usable zone !
Refresh your browser

Or, with CCS load as attached below:
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File Type: gif 12maccs.gif (15.2 KB, 414 views)
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Old 17th May 2009, 08:56 AM   #5
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Default ok, I'll stop now

enough getting others to design for me!!! Thanks a whole lot Yves.
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Old 17th May 2009, 08:59 AM   #6
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You're welcome
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Old 17th May 2009, 09:21 AM   #7
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Question ok Yves, just one more

It looks to be more linear CCS loaded at 10ma and gives plenty of swing too. What was the reason you chose the 14ma point on your RIAA pre?
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Old 17th May 2009, 11:15 AM   #8
Yvesm is offline Yvesm  France
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Default Hey Down under !

Good question . . . I dunno !
Perhaps to extract the last half dB gain

Anyway, looking at the voltage level delivered by the cartridge, linearity is not the essential issue . . . I think

If you plan to build this preamp, keep in mind it must dissipate a lot of calories.
Make it larger than mine

Yves.
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Old 12th September 2011, 04:57 PM   #9
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Hello Yvesm,


Do you have schematic for preamp with EC900 / PC900?


Thanks,


Dragan
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Old 12th September 2011, 06:05 PM   #10
Yvesm is offline Yvesm  France
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Here it is:

RIAA Passive PC900/4HA5

Have fun !
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