S/PDIF Digital output

[rlim]

So what's the reason for 300ohms?

Jocko:

There is a reason that the secondary is loaded to 300R...................so there

So what's the reason the secondary is loaded to 300 ohms? 300//100//75 = 37.5 ohms, and don't we want 75 ohms?

That is why I suggested getting rid of the 100 ohm, and have 150 ohm primary and 150 ohm secondary so
150//150 = 75 ohms.

 

[Jocko Homo]

Some of the good stuff I have to remain silent on. The guys who pay me to find out stuff like that won't be happy if I blab it all for free on a hobbyists' forum. You already have 98% of it, so don't get greedy.

But suit yourself..........feel free to do it anyway that pleases you. It will work that way.

Jocko

 

[Cobra2]

hint:

chip/gate output impedance...


Arne K

 

[Jocko Homo]

He is talking about the RX side........and why the transformere is loaded to 300R.

Jocko

 

[hifi]

I think he is confusing the zobel resistor for going in parallel with the rest.

 

[rlim]

zobel

Hifi,
Are you saying that the zobel resistor doesn't account for the overall resistance?

 

[Cobra2]

too quick

I was in "output mode", just finishing the Dig-Out board for the Marantz CD-16...where is that BNC...

Arne K

 

[Elso Kwak]

Re: too quick

I was in "output mode", just finishing the Dig-Out board for the Marantz CD-16...where is that BNC...

Arne K

I see cinch, jeck!

 

[goda_takeshi]

Regarding the 1:1 transfo, can I use one of that that use in network card? like this

http://www.bothhandusa.com/products/100BaseT/16PT8515-4-Rev.A9-02.06.09.PDF

I've seen it in left over network card.

 

[goda_takeshi]

update on the 1:1 transfo, I try it on my usb dac and it works (after a while for me to figure which legs to solder.

 

[Ruach]

Hi guys,

Need a bit of help here.

I am trying to work out how the Zobel values (R=100, C=15pF)are computed based on Katapum's schematics, using the Zobel calculator below. He was using a PE 65612 (primary inductance 2.5mH, leakage inductance 0.5uH).


http://ccs.exl.info/calc_cr.html#zobel

I am not able to get back the same values. Can anyone help a small helping hand. Thanks

with pi-pad………..is zobel ok ???

Katapum