Paradise Builders - Page 28 - 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 17th November 2012, 09:51 AM   #271
diyAudio Member
 
Bksabath's Avatar
 
Join Date: Dec 2007
Quote:
Originally Posted by dBudBu View Post
I'm noticing my boards are labeled Paradise R2 and all the documentation is for Paradise R3. Are there any differences that I should be aware of?

Thanks,
Mark
I have not recivied my R3 boards so far but no rush there as I have R2 running

As far as I know same foot print for J fets have changed (easier to solder on R3) and Imput off set is now on board I have soldered those components on botom of my R2 boards.
  Reply With Quote
Old 19th November 2012, 08:48 AM   #272
diyAudio Member
 
Join Date: Dec 2006
Location: Berlin
As we have lots of leds on the pcb I ask if it
is allowed to use one of them as a power on
indicator on the front of the case, cabeled to
the front.
We have green leds, but for this one I will have
a red led.

Does this matter or bring any harm to the circuit?

Thanks,
Christoph
  Reply With Quote
Old 19th November 2012, 09:13 AM   #273
RCruz is offline RCruz  Switzerland
diyAudio Member
 
RCruz's Avatar
 
Join Date: Sep 2006
Location: Wallis
Blog Entries: 1
Quote:
Originally Posted by brozatus View Post
As we have lots of leds on the pcb I ask if it
is allowed to use one of them as a power on
indicator on the front of the case, cabeled to
the front.
We have green leds, but for this one I will have
a red led.

Does this matter or bring any harm to the circuit?

Thanks,
Christoph
IMO it would be better to place a led (with a 10k resistor in series) connected to your raw DC psu, after the rectifying diodes and before the smoothing caps.
__________________
RC
  Reply With Quote
Old 19th November 2012, 09:25 AM   #274
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 brozatus View Post
As we have lots of leds on the pcb I ask if it
is allowed to use one of them as a power on
indicator on the front of the case, cabeled to
the front.
We have green leds, but for this one I will have
a red led.

Does this matter or bring any harm to the circuit?

Thanks,
Christoph
No that is not allowed, this would influence the HF performance of the PSU in a very bad/averse way.
  Reply With Quote
Old 19th November 2012, 09:42 AM   #275
diyAudio Member
 
Join Date: Dec 2006
Location: Berlin
Ok,
no go from you.

I will not do it this way.

Thanks for helping,
Christoph
  Reply With Quote
Old 21st November 2012, 07:13 PM   #276
diyAudio Member
 
Join Date: Jan 2008
Iím having trouble finding BC337-40 and BC327-40 transistors with HFE in the same ballpark between NPN and PNP types. It appears only Fairchild is available here in the US. I ordered 250 of each in ammo pack from Mouser. I get lots of good matches with BC337-40 with HFE in the 490 to 525 range. And lots of good matches with BC327-40 in the 340 to 360 range. But no BC327-40 with HFE higher than 360. So no High HFE BC327-40 to match with the BC337-40. Would it be a good idea to order some more BC327-40 from another supplier such as DigiKey in hopes to get a batch with higher HFE or will that prove to be futile? If not what to do next to get some high HFE BC327-40?

Thanks,
Mark
  Reply With Quote
Old 21st November 2012, 07:34 PM   #277
diyAudio Member
 
Bksabath's Avatar
 
Join Date: Dec 2007
Got mine from Fairchild direct

was about £20 for 1000 + A very large ammountof £ for P&P (to embarasing to say) and another £38 for Custom &exices

You can get much beter deal if you are in the US
HFE from those vas prety hi and avveraged at about 540
  Reply With Quote
Old 22nd November 2012, 03:29 PM   #278
AVWERK is offline AVWERK  United States
diyAudio Member
 
Join Date: Jan 2004
Location: OC,Calif.
Louder did get his from Fairchild Via Mouser.
Bk, are you saying buying directly has something to do with closer matching HFE for both?
How would that be possible? It would be nice to not throw money away in our search

Regards
David
  Reply With Quote
Old 22nd November 2012, 03:41 PM   #279
hesener is offline hesener  Germany
diyAudio Member
 
Join Date: Mar 2005
Location: Munich, Germany
That was just luck. Difficult to tell from which wafer the transistors came....
  Reply With Quote
Old 22nd November 2012, 03:49 PM   #280
diyAudio Member
 
Bksabath's Avatar
 
Join Date: Dec 2007
No not saing closer matching
Just that I had my direct and that if you are in the States it became competitive to go that way
About HFE I am saiing that that particulr batch of Fairchild was prety hi
Different batches may be different
Yes kissed by lady luck this time....

Mine where loose in big bag, ammo pack normaly is beter for matching.
  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 01:13 AM.


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