Paradise Builders - Page 222 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th May 2013, 10:39 AM   #2211
FdW is offline FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
Originally Posted by berndt View Post
I looked at the data sheets to see the pinouts of the k170-j107 and it looks like the board might have the wrong pin labeled for drain?
I'm really sorry if all this has been covered before. Still working from a cell phone so digesting this thread can be a brute.
This may unconfused you Please take notice of the fact that the suppliers of these devices took the liberty to show them (presumably there best (photogenic) side) from different sides, this may have been cause of some confusion
Attached Images
File Type: png J113.PNG (135.4 KB, 290 views)
File Type: png J310.PNG (193.2 KB, 287 views)

Last edited by FdW; 20th May 2013 at 10:47 AM.
  Reply With Quote
Old 20th May 2013, 05:30 PM   #2212
amsoque is offline amsoque  Romania
diyAudio Member
 
Join Date: Nov 2012
Location: Campina
Hi all.

I don't know if this subject has been already discussed here.
I received my stereo pair Paradise PCB, second batch. Thanks all involved and especially Alfred for his kind support. I build my Pre-regulator (the same for all which worked hard on this project - a big Thank you!, and again thanks Benedetto!), and I think it's OK (but I'm not very sure - I have nonetheless some questions, but not here)

What I want to say is that I discovered a little (but important ) error on the PCB's. It's about a short on the plus rail, right on the first resistor - 330 ohm, that is put on the ground. The minus rail is just fine and the shunt reg delivers precisely the 18,2 volts.

So I don't know if anyone else had the same problem, just be careful!

Meanwhile I fixed the short, just by scratching and cutting the link between the resistor printed pad and the ground. All works like a charm, the both rails delivering the 18,2 volts.

Is it normal that the power stage of the shunt warm that much? I cannot put my finger onto the radiator. I have a Benedetto version of pre reg without the Hammond coils (thinking that they are expensive, but perhaps I was wrong), keeping the 40 ohm power resistors, so my pre-reg delivers 39 volts without load and 29 volts connected to the shunt input. Is it too much? Is this the reason for the high temperature of the shunt radiator?

And what can I do? Increase the value of the 40 ohm resistors? inserting the Hammond coils?
And the resistors are also very, but very warm, let's say very hot.

Thanks for your advice.

Emil
  Reply With Quote
Old 20th May 2013, 05:53 PM   #2213
FdW is offline FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
Originally Posted by amsoque View Post
Hi all.

I don't know if this subject has been already discussed here.
I received my stereo pair Paradise PCB, second batch. Thanks all involved and especially Alfred for his kind support. I build my Pre-regulator (the same for all which worked hard on this project - a big Thank you!, and again thanks Benedetto!), and I think it's OK (but I'm not very sure - I have nonetheless some questions, but not here)

What I want to say is that I discovered a little (but important ) error on the PCB's. It's about a short on the plus rail, right on the first resistor - 330 ohm, that is put on the ground. The minus rail is just fine and the shunt reg delivers precisely the 18,2 volts.

So I don't know if anyone else had the same problem, just be careful!

Meanwhile I fixed the short, just by scratching and cutting the link between the resistor printed pad and the ground. All works like a charm, the both rails delivering the 18,2 volts.

Is it normal that the power stage of the shunt warm that much? I cannot put my finger onto the radiator. I have a Benedetto version of pre reg without the Hammond coils (thinking that they are expensive, but perhaps I was wrong), keeping the 40 ohm power resistors, so my pre-reg delivers 39 volts without load and 29 volts connected to the shunt input. Is it too much? Is this the reason for the high temperature of the shunt radiator?

And what can I do? Increase the value of the 40 ohm resistors? inserting the Hammond coils?
And the resistors are also very, but very warm, let's say very hot.

Thanks for your advice.

Emil
See Mpp #6462 Mpp


Quote:
It's about a short on the plus rail, right on the first resistor - 330 ohm, that is put on the ground.
Please post a picture of this.

Quote:
And what can I do? Increase the value of the 40 ohm resistors?
Yes, by (about) 22 to 27 Ohm's. I think I did see another message about this?

These are the most important/relevant messages regarding PSU and Pre-Reg.
  1. Mpp #4375 PSU-pre-regulator.
  2. Mpp #4610 V2 Schemas UPS and Amp.
  3. Mpp #6506 CCS fine-tuning.
  4. Mpp #6462 PSU with my notes.
  5. Mpp #6809 Do not try to feed the CVS of the CCS of the shunt with a regulated power supply.
  6. Mpp #7127 More about transformer selection.
  7. Mpp #7635 Single and dual transformer wiring (also corrected drawing) (See also #7733).
  8. Mpp #7733 Grounding (PSU, RIAA and Player).
  9. Mpp #7810 35V PSU for the CroMagnon.
  10. Mpp #7830 The PSU explained.
  11. Mpp #8386 My resistor recommendation’s.
  12. My Paradise #56 PSU Noise.
  13. PradiseBuilders #13 Schema's and assembly guide.
  14. PradiseBuilders #155 Vdc input voltage minimum simulated.
  15. PradiseBuilders #970 PSU oscillates; posible solutions?
  16. PradiseBuilders #983 Compensating the PSU for oscillations.
  17. PradiseBuilders #1173 Fixing oscillations (up to #1182).
  18. PradiseBuilders #1322 Fuse .
  19. PradiseBuilders #1387 Updated Paradise R3 assembly guide (Also German).
  20. PradiseBuilders #1403 Capacitors bad vs good.
  21. PradiseBuilders #1593 PSU Power Transistor selection.
  22. PradiseBuilders #1644 PSU Output Impedance.
  23. PradiseBuilders #1680 PSU Power Supply Suppression Ratio(PSSR).
  24. PradiseBuilders #1772 NJF selection for the PSU.
  25. PradiseBuilders #1887 Empirical NJF Rgs determination.
  26. PradiseBuilders #2127 More about the PSU fets (J113's etc).
Have a look at these and their following messages.
  Reply With Quote
Old 20th May 2013, 07:09 PM   #2214
diyAudio Member
 
Join Date: Aug 2005
Quote:
Originally Posted by amsoque View Post
What I want to say is that I discovered a little (but important ) error on the PCB's. It's about a short on the plus rail, right on the first resistor - 330 ohm, that is put on the ground.
Very good spot, Emil. i can confirm that on my PCBs the same error can be seen: the rightmost pad of the resistor 330R (R100 in the schematic from 02/10/2012)is connected to input plus on the top layer and on the ground plane on the bottom layer. You can check that input connector measures short circuit between plus input and ground.
It's easy to sort out but it is important for the rest of us that it's known. I don't have a camera available, but maybe somebody else can take a picture.
  Reply With Quote
Old 20th May 2013, 07:26 PM   #2215
diyAudio Member
 
Benedetto's Avatar
 
Join Date: Nov 2007
Location: Knifetown-Germoney
Quote:
Yes, by (about) 22 to 27 Ohm's. I think I did see another message about this?
Hi Frans.
I, or better said Werner @ Ireland had to decrease the
47R power resistors to half value because the estimated
power consumption of the entire Paradise circuit did not
match up to reality.
He got about 24V out of the complete (with those Hammonds)
prereg with the original 47R.
With 47/2 i recall around 27V (?).
So we decided to go for 22R.
And it works like a charm.
Remember,
with only Frans's Shunts the temperature of the cooler is
significant higher than with the RIAA hooked up.

Btw. :
On my Paradise Boards i can not find any shortage in this position.
A picture may be helpfull.
__________________
preregulatorpeterE-MAIL
  Reply With Quote
Old 20th May 2013, 07:53 PM   #2216
amsoque is offline amsoque  Romania
diyAudio Member
 
Join Date: Nov 2012
Location: Campina
Thank you Frans. I'll post tomorrow a couple of pics of the PCB's.

I've already read the threads about PSU, but being not a specialist, with little understanding about electronics, you know... Explain me a thing. I bought two transformers rated 2X24 V at 750 mA (Triad). But I measured 2X28 V AC. Is this OK? That gives at the end of the pre-reg +/- 39 V DC without any load.

Emil
  Reply With Quote
Old 20th May 2013, 08:09 PM   #2217
diyAudio Member
 
Benedetto's Avatar
 
Join Date: Nov 2007
Location: Knifetown-Germoney
Quote:
Originally Posted by amsoque View Post
Thank you Frans. I'll post tomorrow a couple of pics of the PCB's.

I've already read the threads about PSU, but being not a specialist, with little understanding about electronics, you know...
I know
Quote:
Originally Posted by amsoque View Post
Explain me a thing. I bought two transformers rated 2X24 V at 750 mA (Triad). But I measured 2X28 V AC. Is this OK? That gives at the end of the pre-reg +/- 39 V DC without any load.
Emil
Hi Emil,
i am a bit confused, because you wrote everything is working fine.
Next sentence it's not really as fine...
On behalf of the 39V without load, hook it up and measure whats left.
Is the RIAA already conected to the shunts ?
__________________
preregulatorpeterE-MAIL
  Reply With Quote
Old 20th May 2013, 08:24 PM   #2218
amsoque is offline amsoque  Romania
diyAudio Member
 
Join Date: Nov 2012
Location: Campina
I can figure out that with the RIAA hooked up to the shunts, the total consumption increase up to the 200 mA rated, so the 47 R may cut the output voltage. I didn't finish the RIAA so I can't try this yet. Now, as I said, it's very hot (it becomes hot in 5 to 10 minutes) and that scares me. So I think to decrease the voltage a little bit more, by increasing the resistor on the pre-reg as you pointed out. Have the Hammonds that DC resistance, so that you needed to change the value of the resistor to 22R?
It's true that when I put a 120 R as a load to the pre reg I measured 25-26 VDC and the 40R were cooler.

About the short. I think that the huge 12 W 40 R Vishay resistors hindered the fuse to blow up, when I connected the pre reg to the shunt reg and the plus rail was in short to the ground. The Vishay became extremely hot, but the fuse didn't blow. Could this be a explanation?

So, be warned!

Tomorrow, the pics of the really beautiful PCB's. Congrats for those who worked on this.

Emil
  Reply With Quote
Old 20th May 2013, 08:33 PM   #2219
amsoque is offline amsoque  Romania
diyAudio Member
 
Join Date: Nov 2012
Location: Campina
Well, Peter, I wrote the sentence immediately after repairing the PCB and seeing that the both rails gives me the 18 V. And that was, trust me, verrry fine for me. But after a couple of minutes I noticed the increasing in temperature. No more fine.

Didn't yet match the little black things. So RIAA needs to wait.

Good night, sleep well.
  Reply With Quote
Old 20th May 2013, 08:46 PM   #2220
FdW is offline FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
One other thing, in reaction to what Benedetto did say, you must check the shunt temperature with the RIAA operating. If the RIAA is not connected, then the shunt temperature will be way higher.

Quote:
Originally Posted by FdW View Post
See Mpp #6462 Mpp




Please post a picture of this.



Yes, by (about) 22 to 27 Ohm's. I think I did see another message about this?

These are the most important/relevant messages regarding PSU and Pre-Reg.
  1. Mpp #4375 PSU-pre-regulator.
  2. Mpp #4610 V2 Schemas UPS and Amp.
  3. Mpp #6506 CCS fine-tuning.
  4. Mpp #6462 PSU with my notes.
  5. Mpp #6809 Do not try to feed the CVS of the CCS of the shunt with a regulated power supply.
  6. Mpp #7127 More about transformer selection.
  7. Mpp #7635 Single and dual transformer wiring (also corrected drawing) (See also #7733).
  8. Mpp #7733 Grounding (PSU, RIAA and Player).
  9. Mpp #7810 35V PSU for the CroMagnon.
  10. Mpp #7830 The PSU explained.
  11. Mpp #8386 My resistor recommendation’s.
  12. My Paradise #56 PSU Noise.
  13. PradiseBuilders #13 Schema's and assembly guide.
  14. PradiseBuilders #155 Vdc input voltage minimum simulated.
  15. PradiseBuilders #970 PSU oscillates; posible solutions?
  16. PradiseBuilders #983 Compensating the PSU for oscillations.
  17. PradiseBuilders #1173 Fixing oscillations (up to #1182).
  18. PradiseBuilders #1322 Fuse .
  19. PradiseBuilders #1387 Updated Paradise R3 assembly guide (Also German).
  20. PradiseBuilders #1403 Capacitors bad vs good.
  21. PradiseBuilders #1593 PSU Power Transistor selection.
  22. PradiseBuilders #1644 PSU Output Impedance.
  23. PradiseBuilders #1680 PSU Power Supply Suppression Ratio(PSSR).
  24. PradiseBuilders #1772 NJF selection for the PSU.
  25. PradiseBuilders #1887 Empirical NJF Rgs determination.
  26. PradiseBuilders #2127 More about the PSU fets (J113's etc).
Have a look at these and their following messages.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Paradise phono stage hesener Group Buys 1315 11th August 2014 10:37 PM
DIY Paradise - Any good to buy from? gingerpimp0069 Vendor's Bazaar 7 21st June 2007 02:07 PM
DIY Paradise Charlize Jolojl Swap Meet 7 7th December 2006 06:42 AM
Diy Paradise! alexmoose Tubes / Valves 3 24th July 2006 04:37 AM
Another way to paradise ? Bernhard Pass Labs 3 8th August 2003 10:19 PM


New To Site? Need Help?

All times are GMT. The time now is 12:46 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2