Thanks, for the kind words guys. Unfortunately, my soldering skills are not much better than some of you guys. So, I won't be selling any boards with premounted IC's. Anyway, if you want a board (or more), just send me an e-mail, let me know how many, and where you live in the world, and I'll send you the details.
I can personally recommend this place for SMD soldering work. They were helpful and prompt.
Tirna Electronics (ebay)
Dan
Tirna Electronics (ebay)
Dan
lauret said:
Time for some basic electronics
http://www.st.com/stonline/books/pdf/docs/1707.pdf
The 15V is the RMS value at full load. If you don't load the transformer to the max, and take a big capacitor after the rectifier, the output voltage will be much higher.
Ray
i/v conversion
hi was poking around google researching ideas for a different i/v converter/output stage and found this as a good starting place for it http://members.chello.nl/~m.heijligers/DAChtml/Analogue/IV.html
chris
hi was poking around google researching ideas for a different i/v converter/output stage and found this as a good starting place for it http://members.chello.nl/~m.heijligers/DAChtml/Analogue/IV.html
chris
Re: i/v conversion
Chris, you'll notice the final conclusion is the best sounding I/V is a resistor. Sound familiar?
BTW, I was reading a review of the Bel Canto DAC3 in Stereophile yesterday. According to the article (although I cannot seem to verify this), the DAC3 uses - you guessed it - a high quality resistor for I/V. That is followed by an op amp (presumably as a buffer). Seems very similar to what I have done with the ezDAC, which is sort of reassuring. They liked the sound of the DAC3, as well as the fact that it measures very well. I should note, that the DAC3 also uses CS8416 and ASRC is done by CS8421. The actual D/A is done by PCM1792. Looks like I have created a DAC3 clone of sorts.
reddish75 said:
Chris, you'll notice the final conclusion is the best sounding I/V is a resistor. Sound familiar?
BTW, I was reading a review of the Bel Canto DAC3 in Stereophile yesterday. According to the article (although I cannot seem to verify this), the DAC3 uses - you guessed it - a high quality resistor for I/V. That is followed by an op amp (presumably as a buffer). Seems very similar to what I have done with the ezDAC, which is sort of reassuring. They liked the sound of the DAC3, as well as the fact that it measures very well. I should note, that the DAC3 also uses CS8416 and ASRC is done by CS8421. The actual D/A is done by PCM1792. Looks like I have created a DAC3 clone of sorts.
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