Pot-Trans in a DAC

Antonio Tucci · 19th May 2002, 04:16 PM

I'd like to know if it is possible to utilize the Sowter 9335 pot-trans in a DAC (PCM-63) having as I/V converter a R of 10 ohm.

The 9335 should have its primary connected in parallel with the R and its secondary connected to the outputs.
The cables between DAC and preamplifier should be no longer than 30 cm.

Cobra2 · 27th May 2002, 08:30 AM

Have a look at this link...:

http://digilander.iol.it/paeng/magnetics_frame.htm

Jocko Homo · 27th May 2002, 09:12 AM

I wouldn't recommend it. Seems suited for voltage-out DACs, not current-out. How are you going to get the signal up to a usable level?

Jocko

Antonio Tucci · 27th May 2002, 01:43 PM

Why not, Jocko ?
9335 should work well fed from a 10 ohm source and should be no problem with the lead length.
The only probelm could be represented by dc offset from the DAC (but I believe that this is not the case) that would magnetise the
transformer.

Antonio

Jocko Homo · 27th May 2002, 11:59 PM

Because you are talking about a signal that might reach 10 mV. Yes, moving coils work that way, but why make things hard for yourself.

Jocko

19th May 2002, 04:16 PM	#1
Antonio Tucci diyAudio Member Join Date: May 2002 Location: Lesina (FG) - Italy	Pot-Trans in a DAC I'd like to know if it is possible to utilize the Sowter 9335 pot-trans in a DAC (PCM-63) having as I/V converter a R of 10 ohm. The 9335 should have its primary connected in parallel with the R and its secondary connected to the outputs. The cables between DAC and preamplifier should be no longer than 30 cm.

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27th May 2002, 08:30 AM	#2
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Have a look at this link...: http://digilander.iol.it/paeng/magnetics_frame.htm

27th May 2002, 09:12 AM	#3
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	I wouldn't recommend it. Seems suited for voltage-out DACs, not current-out. How are you going to get the signal up to a usable level? Jocko

27th May 2002, 01:43 PM	#4
Antonio Tucci diyAudio Member Join Date: May 2002 Location: Lesina (FG) - Italy	Why not, Jocko ? 9335 should work well fed from a 10 ohm source and should be no problem with the lead length. The only probelm could be represented by dc offset from the DAC (but I believe that this is not the case) that would magnetise the transformer. Antonio

27th May 2002, 11:59 PM	#5
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	Because you are talking about a signal that might reach 10 mV. Yes, moving coils work that way, but why make things hard for yourself. Jocko