The Pumpkin preamp package(s) for sale - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Vendor's Bazaar

Vendor's Bazaar Commercial Vendors large & small hawking their wares

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 21st October 2007, 12:12 AM   #1
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Default The Pumpkin preamp package(s) for sale

well , as in subject ;

never-ending developing thread (mostly off topic) HERE

freshly started building thread with definitive schematics and other related info HERE


full Pumpkin package is consisted in variant marked as "A" ;

so:

"A" package - two main boards with two reg boards

main pcb - 2 pcs
J310 jfets - 2 matched pairs
J310 jfets - 2 pieces
BC546B - 2 matched pairs
BC546B - 2 pcs

reg pcbs - 2 pcs
BC546B - 4 matched pairs
BC546B - 6 pcs
BC556B - 4 matched pairs
BC556B - 6 pcs
LM336-5Z - 4 pcs
BF245C - 4 pcs

price 95 Euro


"B" package - two main boards with just one reg board; this variant possible with few changes in resistors on reg board and somewhat bigger heatsinks than you can see in mentioned threads

main pcb - 2 pcs
J310 jfets - 2 matched pairs
J310 jfets - 2 pieces
BC546B - 2 matched pairs
BC546B - 2 pcs

reg pcbs - 1 pcs
BC546B - 2 matched pairs
BC546B - 3 pcs
BC556B - 2 matched pairs
BC556B - 3 pcs
LM336-5Z - 2 pcs
BF245C - 2 pcs


price is 80 Euros



"C" package just two main boards- without regs

main pcb - 2 pcs
J310 jfets - 2 matched pairs
J310 jfets - 2 pieces
BC546B - 2 matched pairs
BC546B - 2 pcs

price is 59 Euros

"D" package just two reg boards , if you need them for your own eeny weeny whatever sort of stage ; they're easy scalable for anything between twice 15 to twice 80 - 90 volts at output and - somewhat dependable of output voltage - even to 300 mA of output current

reg pcbs - 2 pcs
BC546B - 4 matched pairs
BC546B - 6 pcs
BC556B - 4 matched pairs
BC556B - 6 pcs
LM336-5Z - 4 pcs
BF245C - 4 pcs

price is 65 Euros

my modest conclusion is that entire package is ,even most expensive, , still best bang for the buck ......


P&P expenses are EXTRA ; count on 6 to 12 Euros ,depending of destination ; Air Mail off course .

Paypal fee is my concern

you can reach me - if you wish , on this e-mail addy :

chokyATneobee.net ; obviously- you need to replace "AT" with "@"

in case that you can make your own pcbs for feel free to do this and join us in mentioned building thread
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 22nd October 2007, 01:42 PM   #2
dviswa is offline dviswa  United States
diyAudio Member
 
Join Date: Oct 2004
Hi ZM,

Can you please provide a BOM?
Also is it possible to add a heat sink to the packages for an extra cost?

Regards,
Dinesh
  Reply With Quote
Old 22nd October 2007, 01:54 PM   #3
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally posted by dviswa
Hi ZM,

Can you please provide a BOM?
Also is it possible to add a heat sink to the packages for an extra cost?

Regards,
Dinesh

you can expect generic list of parts this days in new thread ,also as pdf file fr download .
I can't make proper BOM (with digikey or something purchase numbers etc) for you fellas living in US , just because I don't live there and I can't easily check that some part actually exist in vivo,not just in online catalog .

anyway - I think that generic BOM will be enough ,especially if I include adequate simillar types for some positions .

heatsinks ?
off course I can , but you really don't need to buy them from any greedy Eu based boy ; you can easily cut few sheets of AL ....... dissipation is not so big ; heatsinks on piccies are nice and effective , but not more effective than same length ,twice that high - 3mm Al sheet.
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 24th October 2007, 03:21 AM   #4
dviswa is offline dviswa  United States
diyAudio Member
 
Join Date: Oct 2004
Hi ZM,

Thanks for the BOM. Please consider adding for extra cost
Q5,Q7 IRF9510 matched pair
Q6,Q8 IRF510 matched pair

This will save the hassle of buying a large number of these devices and matching them, since you are already providing some of the matched devices.

Obviously you know somebody will raise the same question for the shunty once you have published a BOM for it.

Regards,
Dinesh
  Reply With Quote
Old 24th October 2007, 08:30 AM   #5
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally posted by dviswa
Hi ZM,

Thanks for the BOM. Please consider adding for extra cost
Q5,Q7 IRF9510 matched pair
Q6,Q8 IRF510 matched pair

This will save the hassle of buying a large number of these devices and matching them, since you are already providing some of the matched devices.
................


well, I'll do that if someone will be interested

Quote:
Obviously you know somebody will raise the same question for the shunty once you have published a BOM for it.
for Shunty - little bjts are just "good to be matched , but not absolutely necessary ; I'm sending them just because they aren't big hassle neither for matching or final cost , and it's really better if they are matched .

regarding IRFs and darlingtons in Shunty , there is absolutely no reason for matching them
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 24th October 2007, 09:02 AM   #6
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Default Pumpkin BOM

too late for editing previous post ;

just in case , first BOM is HERE
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 24th October 2007, 12:26 PM   #7
diyAudio Member
 
mpmarino's Avatar
 
Join Date: Jun 2004
Location: Crunchville, where I don't fit in.
To save searching through that perfectly organized pumpkin thread -

Regarding the fancy pants shunty, How many volt secondary transformer minimum do we need to get +-36v?

Or should I ask - How many volts does shunty drop before arriving at final regulated voltage?

Will Shunty drive Pumpkin drive F4?
__________________
Crazy Yankee.
  Reply With Quote
Old 24th October 2007, 12:31 PM   #8
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally posted by mpmarino
To save searching through that perfectly organized pumpkin thread -

Regarding the fancy pants shunty, How many volt secondary transformer minimum do we need to get +-36v?

Or should I ask - How many volts does shunty drop before arriving at final regulated voltage?

Will Shunty drive Pumpkin drive F4?

you'll find that all in dedicated BOM-schmtc-few tips -pdf

ya need dreky 84Vct / 600mA xformer

so - 84/2x1,41~60Vdc ........... so you cheapskate can use even 63V caps on input of Shunty

well - if sissssy series reg almost succeeded at BAF to drive a F4 driving Pumpkin ............ I presume that Shunty will do this
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 24th October 2007, 10:22 PM   #9
dviswa is offline dviswa  United States
diyAudio Member
 
Join Date: Oct 2004
Quote:
Originally posted by Zen Mod



well, I'll do that if someone will be interested



for Shunty - little bjts are just "good to be matched , but not absolutely necessary ; I'm sending them just because they aren't big hassle neither for matching or final cost , and it's really better if they are matched .

regarding IRFs and darlingtons in Shunty , there is absolutely no reason for matching them
Great, please make a Package A+ , which include the additional FETs.

Thanks,
Dinesh
  Reply With Quote
Old 24th October 2007, 11:42 PM   #10
dviswa is offline dviswa  United States
diyAudio Member
 
Join Date: Oct 2004
Oops, I forgot to ask another question. The forum does not let me edit posts beyond 30 minutes.

ZM,

What is the output of this preamp and at what load impedence?

Thanks,
Dinesh
  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
Electronic Package for Sale Peter Menting Swap Meet 2 31st July 2008 02:45 AM
For Sale OPA627AU Soic Package Richardgreat Swap Meet 7 26th March 2007 05:43 PM
For sale: IRF150 MOSFETs in TO-3 package JohnG Swap Meet 1 13th March 2006 10:59 AM
OHP and Projection Panel Package for sale lumensman Swap Meet 0 12th January 2005 08:41 PM


New To Site? Need Help?

All times are GMT. The time now is 12:59 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