Simplistic NJFET RIAA - Page 165

AndrewT · 16th April 2009, 06:37 PM

Quote:

Originally posted by RCruz
I do not know how to measure noise in the ve lines so I depend on my ears.

just measure the output of the quiescent amplifier.

nicoch58 · 16th April 2009, 06:38 PM

contamination are on the main...motor ,home tool ,air wifi

nicoch58 · 16th April 2009, 06:40 PM

11DQ are edge?

RCruz · 16th April 2009, 07:03 PM

11DQ09 are very fast so you must be carefull where you put them. Might make some systems seem edgy. Schotkys sound very good but I like hexfred even better.

RCruz · 16th April 2009, 07:09 PM

Quote:

Originally posted by AndrewT
just measure the output of the quiescent amplifier.

Hi Andrew T

What do you mean ?

What unity are we talking about ? Current ? Volt ? Hz?

Please excuse my ignorance, if you give me a hint, you will be surprised with my evolution.... I am a fast learner.

Ricardo

nicoch58 · 16th April 2009, 07:23 PM

you use caps across diode?

RCruz · 16th April 2009, 07:27 PM

Yes... 220u 35v ZA fast cap.

RCruz · 16th April 2009, 07:46 PM

Quote:

Originally posted by AndrewT
just measure the output of the quiescent amplifier.

Do you mean measure the output of the Riaa in a quiescent state "idling" ?

You need a scope to see this right ?

Ricardo

nicoch58 · 16th April 2009, 07:57 PM

Quote:

Originally posted by RCruz
Yes... 220u 35v ZA fast cap.

I mean snubber 0,1uf or so on on diode

RCruz · 16th April 2009, 08:03 PM

No, I just have a .22u between the tx and the bridge. I believe I should not bypass the hexfred diodes.

16th April 2009, 06:38 PM	#1642
nicoch58 diyAudio Member Join Date: Oct 2004	contamination are on the main...motor ,home tool ,air wifi __________________ Sic58

16th April 2009, 06:40 PM	#1643
nicoch58 diyAudio Member Join Date: Oct 2004	11DQ are edge? __________________ Sic58

16th April 2009, 07:03 PM	#1644
RCruz diyAudio Member Join Date: Sep 2006 Location: Cascais Blog Entries: 1	11DQ09 are very fast so you must be carefull where you put them. Might make some systems seem edgy. Schotkys sound very good but I like hexfred even better. __________________ RC

16th April 2009, 07:23 PM	#1646
nicoch58 diyAudio Member Join Date: Oct 2004	you use caps across diode? __________________ Sic58

16th April 2009, 07:27 PM	#1647
RCruz diyAudio Member Join Date: Sep 2006 Location: Cascais Blog Entries: 1	Yes... 220u 35v ZA fast cap. __________________ RC


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16th April 2009, 08:03 PM	#1650
RCruz diyAudio Member Join Date: Sep 2006 Location: Cascais Blog Entries: 1	No, I just have a .22u between the tx and the bridge. I believe I should not bypass the hexfred diodes. __________________ RC

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