PC900 / EC900 curves

aardvarkash10 · 17th May 2009, 06:55 AM

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?

Yvesm · 17th May 2009, 08:41 AM

Hi !

I've used that.

said to be equivalent.

Yves.

aardvarkash10 · 17th May 2009, 08:45 AM

And so I figured you would have some idea of a useful operating point... or even may have developed some anode V/I curves!

Yvesm · 17th May 2009, 08:55 AM

Added a usable zone !
Refresh your browser

Or, with CCS load as attached below:

aardvarkash10 · 17th May 2009, 08:56 AM

enough getting others to design for me!!! Thanks a whole lot Yves.

Yvesm · 17th May 2009, 08:59 AM

You're welcome

aardvarkash10 · 17th May 2009, 09:21 AM

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?

Yvesm · 17th May 2009, 11:15 AM

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.

radiostar · 12th September 2011, 04:57 PM

Hello Yvesm,

Do you have schematic for preamp with EC900 / PC900?

Thanks,

Dragan

Yvesm · 12th September 2011, 06:05 PM

Here it is:

RIAA Passive PC900/4HA5

Have fun !

17th May 2009, 06:55 AM	#1
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	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? __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012

17th May 2009, 08:45 AM	#3
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	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! __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012

17th May 2009, 08:56 AM	#5
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	ok, I'll stop now enough getting others to design for me!!! Thanks a whole lot Yves. __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012

17th May 2009, 09:21 AM	#7
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	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? __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012

17th May 2009, 11:15 AM	#8
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	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.

17th May 2009, 08:41 AM	#2
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	Hi ! I've used that. said to be equivalent. Yves.

17th May 2009, 08:59 AM	#6
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	You're welcome

12th September 2011, 04:57 PM	#9
radiostar diyAudio Member Join Date: Apr 2009	Hello Yvesm, Do you have schematic for preamp with EC900 / PC900? Thanks, Dragan __________________ tubes.rs facebook.com/tubes.rs

12th September 2011, 06:05 PM	#10
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	Here it is: RIAA Passive PC900/4HA5 Have fun !

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