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Old 28th April 2004, 02:37 AM   #21
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Very interesting project. Cheap, fully balanced and very compact.
Might be an interesting match for my version of D1 output stage, which measures 80x40 millimeters (stereo, balanced, single sided board):
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Old 28th April 2004, 09:11 AM   #22
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Quote:
Originally posted by sparkle
how do You set this thing to work properly? I know that I should have 2 volts on input of the i/v and I know that it should be trimmed with VR1 but from which side do You start- from which value of the VR1. Regards
daniel
When you set the I/V stage first time, the TDA1543 is diconnected.
Trim the pot until you have 2,00 volts at the source , than you swich off the supply , and wait for discharge. Than connect the TDA to the I/V stage, power up both circuits and do the final trimming.
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Old 28th April 2004, 09:26 AM   #23
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Default Re: Re: Balnced Arrangement

Quote:
Originally posted by guido


Two idea's for improvements:

reclock all the data with FF's: use '74 so you don't need inverters and reclock with the tentclock. You will loose jitter created by the 7310 (don't know the timingrelation between 7310 I2S out and it's clock input but it should be possible). Maybe you need to invert the clock to the 7310.

Second, obvious (coming from me ): split left and right into two
I2S streams and use one dac for left and one for right.

Greetings,

Reclock: first off , do you think I need 2 FF in series to do the reclock? or just one in sinchronous mode?
No inverters, no buffers? You know , it is just fiew days that the XOR buffers are working in the circuits and every time I change something in the set up is like to jump off the spring-board
And jitter is so underhand
What is the way of inverting clock? I re read your .pdf for the split LR version I admit it is interesting to me and I feel like I am close to the possibilty of making an effort like that, if you have a pcb of your work I will be interested for sure
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Old 28th April 2004, 09:30 AM   #24
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Default Re: Re: Re: Re: The Pass D1 For Tda1543

Quote:
Originally posted by rfbrw



You are confusing the specific with the general.
...it is also true that the I/V stage does not amplifies current.
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Old 28th April 2004, 09:41 AM   #25
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Quote:
Originally posted by HBarske
Very interesting project. Cheap, fully balanced and very compact.
Might be an interesting match for my version of D1 output stage, which measures 80x40 millimeters (stereo, balanced, single sided board):
Great , but probably the buffers has to be modified too. The source follower load resistor.
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Old 28th April 2004, 09:56 AM   #26
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HI!

Mr. Billiani - thanks You made my day .
I was allways wondering how to trim the active i/v ......none of my question were answered until now. Thanks again!


regards
daniel


edit:

HBarske- I can't see that You are using volume control like in d! service manual- if so- what is the maksimum output that You get out of it?
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Old 28th April 2004, 10:09 AM   #27
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Quote:
Great , but probably the buffers has to be modified too. The source follower load resistor
Component values certainly will have to bei modified. The values above are the original ones.
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Old 28th April 2004, 10:17 AM   #28
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Quote:
Originally posted by sparkle
HI!

Mr. Billiani - thanks You made my day .
daniel
I am glad
Quote:
Originally posted by HBarske
Component values certainly will have to bei modified. The values above are the original ones.
As you see I considered the no-buffer option - if a preamp is used, of course- and works great before the BOSOZ.

cheers
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Old 28th April 2004, 10:27 AM   #29
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My suggestion refers to your idea in post #16, of course "no buffer" is an option.
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Old 28th April 2004, 10:35 AM   #30
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Hi!
One more- did somebody tried to trim the original schematic from D1 from Mr. Pass to 2V or little more to make it suitable for our TDA1543?

regards
daniel
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