UGS-muse preamp GB - Page 201

schultzsch · 2nd December 2020, 10:20 AM

Thanks Alex and sorry for being so pushy...

PsykoK · 2nd December 2020, 12:18 PM

No problem, I can understand that you get impatient.

schultzsch · 2nd December 2020, 12:42 PM

Well all the past years in the Christmas period I visited my family members and all that kind of stuff you do in the period which mainly is socializing, I guess you all know and did the same.
Since this is the first year when everything will be closed and the relatives will not be so happy to see you at their door I planned to go ahead and do a bit of soldering for the preamp just to forget about the period which we go through.
This is the reason which made me to be a bit pushy and impatient, hope you understand me and accept my apologies.

gionag · 2nd December 2020, 01:02 PM

They are here...
I can't test the second encoder because the optical encoder is still in the hands of ups. They blame snow for the delay ... Go figure.
As soon as I get them I can test my whole contraption and then... If someone needed i can give Gerber's for both the adapters and the ring light.

I trust stone for the functional test of the second encoder.. i didn't see that delay coming. So on that matter I have no feedback. Other than that... Everything else seems to run pretty smoothly.20201202_135744.jpg

PsykoK · 3rd December 2020, 10:44 AM

I'm in trouble

Boydk · 3rd December 2020, 11:37 AM

PsykoK · 3rd December 2020, 05:42 PM

I have no received everything.
I will try to sort everything this WE.

I will keep you updated

gionag · 3rd December 2020, 06:57 PM

Good luck

PsykoK · 4th December 2020, 09:36 AM

thanks, I almost finished sorting and preparing the PSU parts yesterday evening.

I just discovered that I have 3 missing refs. they should be delivered next week (mouser sent them directly from the US)

Hicoco · 4th December 2020, 04:20 PM

For those who will use the PSU substitute, 2 things for now.
1- Be sure that you have the Hammond transformers pins straight, it is very tight when you put those in the PCB holes. Looks like the pins are a little bit bigger than in the datasheet.
2- If you use J113 instead of PF5102 Jfet, check the IDDS of each and adapt the signal resistor value of each (R4 R7 R8)
see:Salas SSLV1.3 UltraBiB shunt regulator
Also for the snubber parts, i will find the best value for the Hammond Transformer we use with my Quasimodo Board and will post the results.

4th December 2020, 04:20 PM	#2010
Hicoco diyAudio Member Join Date: Feb 2018 Location: Provence	For those who will use the PSU substitute, 2 things for now. 1- Be sure that you have the Hammond transformers pins straight, it is very tight when you put those in the PCB holes. Looks like the pins are a little bit bigger than in the datasheet. 2- If you use J113 instead of PF5102 Jfet, check the IDDS of each and adapt the signal resistor value of each (R4 R7 R8) see:Salas SSLV1.3 UltraBiB shunt regulator Also for the snubber parts, i will find the best value for the Hammond Transformer we use with my Quasimodo Board and will post the results. __________________ Every DIYer need Balanced-Unbalanced Audio Input Selector Module

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2nd December 2020, 10:20 AM	#2001
schultzsch diyAudio Member Join Date: Mar 2009	Thanks Alex and sorry for being so pushy...

2nd December 2020, 12:18 PM	#2002
PsykoK diyAudio Member Join Date: Sep 2002 Location: Mulhouse, France	No problem, I can understand that you get impatient.

2nd December 2020, 12:42 PM	#2003
schultzsch diyAudio Member Join Date: Mar 2009	Well all the past years in the Christmas period I visited my family members and all that kind of stuff you do in the period which mainly is socializing, I guess you all know and did the same. Since this is the first year when everything will be closed and the relatives will not be so happy to see you at their door I planned to go ahead and do a bit of soldering for the preamp just to forget about the period which we go through. This is the reason which made me to be a bit pushy and impatient, hope you understand me and accept my apologies.

2nd December 2020, 01:02 PM	#2004
gionag diyAudio Member Join Date: Jun 2007	They are here... I can't test the second encoder because the optical encoder is still in the hands of ups. They blame snow for the delay ... Go figure. As soon as I get them I can test my whole contraption and then... If someone needed i can give Gerber's for both the adapters and the ring light. I trust stone for the functional test of the second encoder.. i didn't see that delay coming. So on that matter I have no feedback. Other than that... Everything else seems to run pretty smoothly.20201202_135744.jpg

3rd December 2020, 11:37 AM	#2006
Boydk diyAudio Member Join Date: Feb 2010 Location: Aarhus, Denmark

3rd December 2020, 05:42 PM	#2007
PsykoK diyAudio Member Join Date: Sep 2002 Location: Mulhouse, France	I have no received everything. I will try to sort everything this WE. I will keep you updated

3rd December 2020, 06:57 PM	#2008
gionag diyAudio Member Join Date: Jun 2007	Good luck

4th December 2020, 09:36 AM	#2009
PsykoK diyAudio Member Join Date: Sep 2002 Location: Mulhouse, France	thanks, I almost finished sorting and preparing the PSU parts yesterday evening. I just discovered that I have 3 missing refs. they should be delivered next week (mouser sent them directly from the US)