Hi all,
I know we have another D1 I/V thread.
Just want to separate this as D1 "JFET" I/V. . .
I believe PaPa will encourage us with this.
I also invite all of your opinions, advices and contributions with
your own idea or design.
Including the two compensation caps, I am trying to apply the
original component values, except in the area around J310.
I am using J310 as I have many left-over behind my previous
JFET pre project, Krazy.
As you see, this is for the unbalanced output.
I might lower the rail voltages and accordingly scale down other values, later when I actually build.
Will this work. . . ? Thanks for any comment. . .
I know we have another D1 I/V thread.
Just want to separate this as D1 "JFET" I/V. . .
I believe PaPa will encourage us with this.
I also invite all of your opinions, advices and contributions with
your own idea or design.
Including the two compensation caps, I am trying to apply the
original component values, except in the area around J310.
I am using J310 as I have many left-over behind my previous
JFET pre project, Krazy.
As you see, this is for the unbalanced output.
I might lower the rail voltages and accordingly scale down other values, later when I actually build.
Will this work. . . ? Thanks for any comment. . .
Attachments
Ayo. . .
Found one mis-print.
Corrected and marked it in red - i.e. reversed polarity of the electrolytic cap at the bottom.
As the reversed polarity causes unsafe explosion of the cap,
I would like to ask Audiofreak to remove the drawing in post#1.
Thanks.
Found one mis-print.
Corrected and marked it in red - i.e. reversed polarity of the electrolytic cap at the bottom.
As the reversed polarity causes unsafe explosion of the cap,
I would like to ask Audiofreak to remove the drawing in post#1.
Thanks.
Attachments
Looking at the schematics it looks as if this DACchip has no I-out - I dont know if theres anything you can do..... My AD1865 has pins where you can tap the I signal and not send it to the internal opamps - looks like the 1732 does not give you this option.....
Cheers !
Hans
Cheers !
Hans
buy some older Philips junkBabowana said:To build this, I wanted to see inside of my CD-player
Hek! found that the output of DAC was voltage, not current
What should I do? Still can go ahead?
I'm full of them even if some aren't in my place.....
it's time to have more than few CD players,isn't it?
except if you are in new technologies ,as DVD or something.....
btw-when you'll try toob susy?
Maybe what you need is a nice J-fet buffer, without the I/V conversion, after the DAC-chip then? Might be better than the ugly opamps. Something with balanced output would be nice. I wouldnt know, just throwing out an ideafound that the output of DAC was voltage, not current
Steen
Buhl said:looks like the 1732 does not give you this option.....
Cheers !
Hans
Cheers!!!
Choky said:buy some older Philips junk
it's time to have more than few CD players,isn't it?
except if you are in new technologies ,as DVD or something.....
btw-when you'll try toob susy?
Will try to find one
Have number of CDs, no need DVD/SACD
Time not allow my thinking back to tubes
But who knows
steenoe said:Maybe what you need is a nice J-fet buffer, without the I/V conversion,
Steen
Tube buffer after the PCM1732
Ah, the sound sour for me
Jfet/Mosfet buffer, good idea
Thank you all
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Pass Labs
- D1 - JFET I/V Converter