Philips EL3536 - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 1st June 2009, 09:39 PM   #1
diyAudio Member
 
Join Date: Dec 2008
Question Philips EL3536

I have two sets of PT/OPT/tubes (EF86, 12AX7, ECL82, EZ80) salvaged from a pair of mono Philips EL3536 RtRs. Any suggestions as to an appropriate SE circuit(s) which would utilize the parts available? I don't have any info on the transformers' parameters...
Attached Images
File Type: jpg philips-rtr2-b.jpg (74.9 KB, 433 views)
  Reply With Quote
Old 1st June 2009, 09:49 PM   #2
diyAudio Member
 
aardvarkash10's Avatar
 
Join Date: Mar 2007
Location: Auckland, NZ
Default why reinvent the wheel?

simplify and repackage the circuit. Replace all caps etc, don't bother with the EF86 and the 12ax7 as they are only there to provide gain you no longer need. Keep the existing ECL82. Or, if you want a bit of a fun challenge, RH84 the circuit. Values will have to be modded a bit, and revintage will tell you you are mad, but you have all the bits...
__________________
"Folks, you can't prove truthiness with information. You prove truthiness with more truthiness. In a process known as truthinessiness." - Stephen Colbert, The Colbert Report
  Reply With Quote
Old 1st June 2009, 10:09 PM   #3
diyAudio Member
 
aardvarkash10's Avatar
 
Join Date: Mar 2007
Location: Auckland, NZ
Default original diagram here

but it shows a slightly different tube compliment to what you have.... http://mb.abovenet.de/tonbandwelt/ph...536/el3536.htm
__________________
"Folks, you can't prove truthiness with information. You prove truthiness with more truthiness. In a process known as truthinessiness." - Stephen Colbert, The Colbert Report
  Reply With Quote
Old 2nd June 2009, 07:33 PM   #4
diyAudio Member
 
Join Date: Dec 2008
Smile Re: original diagram here

Thank you aardvarkash! This, once again, goes to show that this website is a real treasure. For days I had been unsuccessfully searching the net for the original diagram...

I wanted to take a look at the schematic in the first place in order to find an info on the output transformers - 3.5 Ohm speakers were connected and that's what confused me... Since I'm new to tubes and without any diagnostic equipment whatsoever (save for a cheapo digital multimeter), I couldn't measure the primary load...

Further, it turns out the mono RtRs were not EL3536 after all (I was careless enough to throw the decks away without writing down model numbers). They have EL3536 output transformers - WT 511 22, but the power transformers are WT 510 92 and WT 511 13.1 - different numbers but with identical pin layout and both with EZ80...

Another model, though - EL 16B, perfectly matches the parts layout...

And as to the RH EL84 - I've built one and I'm extremely satisfied with it. Hammonds, no PIOs and no tantalums and it still sounds quite nice...
  Reply With Quote
Old 13th December 2011, 02:17 PM   #5
diyAudio Member
 
Join Date: Nov 2010
Can anyone post a diagram of an EL16B as I have similar power and output transformers. My transformers are wt 510 92.1 and my out put has the number wt 511 21.
  Reply With Quote
Old 6th January 2012, 05:58 PM   #6
sasha70 is offline sasha70  United Kingdom
diyAudio Member
 
Join Date: Jul 2011
Location: Newtownards
Good evening.
This is schematic of output section of EL3536 with WT511 22 transformer.
Could you please comment if anything missing?

Regards.
Attached Images
File Type: jpg IMAG0807 (Medium).jpg (45.4 KB, 253 views)
  Reply With Quote
Old 6th January 2012, 10:29 PM   #7
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
Hi,

I think there's missing a capacitor from screen grid (pin 9) to ground.

Best regards!
  Reply With Quote
Old 6th January 2012, 11:34 PM   #8
diyAudio Member
 
Join Date: Aug 2008
...and keep the mustard Philips/Mullard capacitors if you can, guitar amp makers go crazy for them.
  Reply With Quote
Old 7th January 2012, 08:58 AM   #9
diyAudio Member
 
mississippi's Avatar
 
Join Date: Apr 2006
Location: holland
In my "archive" I had a schema.
Here it is.
Attached Images
File Type: gif Philips_EL3536A.GIF (181.9 KB, 224 views)
  Reply With Quote
Old 7th January 2012, 10:38 PM   #10
sasha70 is offline sasha70  United Kingdom
diyAudio Member
 
Join Date: Jul 2011
Location: Newtownards
Thank you for comments and schematic.
I have found this missing capacitor on schematic diagram.
I have found interesting link on how to measure output transformer impedance:
Output Transformer Impedance
Is one EL84 will provide enough gain?
Should I add EL82 (first stage) to this amplifier?
Best regards.
  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
FS Alnico Philips AD3800M AD3800AM and Philips transformers guglielmope Swap Meet 8 10th January 2011 11:28 AM
philips cd 880 philips cd880 service manual 0519 Digital Source 4 28th August 2008 11:43 AM
Philips CDM-3 Angelm Digital Source 1 31st March 2003 04:52 PM


New To Site? Need Help?

All times are GMT. The time now is 06:22 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