Tube-I-zator Professional PCB - Page 16 - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys

Group Buys Members group buys

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 29th May 2010, 10:56 PM   #151
joemana is offline joemana  United States
diyAudio Member
 
Join Date: Oct 2006
Location: San Jose
Hi Oliver,

I made some measurements on my tubeIzator after I replaced the tube from 12ax7 to 6n6p with the jumper to 12ax7 side and mid via. Is there something wrong with these voltages?

Pin 1. (socket pin) no tube is 220V
pin 4 & 5 6.3V ea.
The rest of pins are 0V.

Here is the measured voltages with tube:

Pin 1. 75V
pin 2 & 3 38V ea.
pin 4 6.3V
pin5 0
pin 6 38V
pin 8. 0.7V
the rest of pins are 0V

I did not hook this to my amp as I'm afraid there is something wrong with this connections?

Thanks,

Joe
  Reply With Quote
Old 30th May 2010, 08:36 AM   #152
diyAudio Member
 
dvb projekt's Avatar
 
Join Date: Feb 2009
Location: Willich, Germany
Blog Entries: 37
Send a message via Skype™ to dvb projekt
Hi Joe,

if you connect everything right, only on Pin4 is 6,3V for the 6N2P (6N6P).

Please post a photo of your pcb. I will have a look.

Best,
Oliver
__________________
Reference TDA1541A DAC project PCBs / Tube-I-zator PCB / SSHV-Shunt PCB
Stock status in my Blog
  Reply With Quote
Old 31st May 2010, 11:44 PM   #153
joemana is offline joemana  United States
diyAudio Member
 
Join Date: Oct 2006
Location: San Jose
Hi Oliver,

You are correct that only pin4 should read 6.3V. I re-measured it without the tube and with the jumper on mid via and 12ax7 via, only pin1 and pin4 got the voltage reading.
But after I plugged the tube, I got similar readings as my previous post.
Pin1 75V
Pin2 38V
Pin3 38V
Pin4 6.3V
Pin6 38V
Pin8 0.7V
all the rest of the pins measured 0V.
Do you mean that when the tube is plug in, that only pin 4 and pin 1 should have the voltage reading?

Remember that the unit works properly with the 12ax7, the only changes that I made was replaced the resistor for B+ voltage and jumper for the switch.

DSCN0461.JPG

DSCN0463.JPG

bufII.jpg

Thanks,

Joe
  Reply With Quote
Old 1st June 2010, 06:50 AM   #154
diyAudio Member
 
dvb projekt's Avatar
 
Join Date: Feb 2009
Location: Willich, Germany
Blog Entries: 37
Send a message via Skype™ to dvb projekt
Hi Joe,

because the 6H6P has a lot more anode current (≈ 28mA) on each triode (6N2P ≈ 2,3mA) there could be a small voltage drop of B+ but its a bit to much.

What is the input voltage of the anode supply?

So you should adjust the two 1K0 resistors in the anode power supply to get the B+ to ≈120V.

The rest of the voltages are ok.


Best,
Oliver
__________________
Reference TDA1541A DAC project PCBs / Tube-I-zator PCB / SSHV-Shunt PCB
Stock status in my Blog
  Reply With Quote
Old 1st June 2010, 07:05 AM   #155
Pilsern is offline Pilsern  Norway
diyAudio Member
 
Join Date: Jun 2004
Location: Norway
Hi Oliver,
I am collecting the last parts for my board, but I am a little confused about the switch.
Is it a on/off switch or an on-on switch (on-none-on) ??

https://www1.elfa.se/elfa3~no_no/def...item=35-230-20 will this one work ?
  Reply With Quote
Old 1st June 2010, 08:01 AM   #156
diyAudio Member
 
dvb projekt's Avatar
 
Join Date: Feb 2009
Location: Willich, Germany
Blog Entries: 37
Send a message via Skype™ to dvb projekt
This one fits perfect!
__________________
Reference TDA1541A DAC project PCBs / Tube-I-zator PCB / SSHV-Shunt PCB
Stock status in my Blog
  Reply With Quote
Old 1st June 2010, 08:10 AM   #157
Pilsern is offline Pilsern  Norway
diyAudio Member
 
Join Date: Jun 2004
Location: Norway
Quote:
Originally Posted by dvb-projekt View Post
This one fits perfect!
Excellent,
Thanks for quick reply!
  Reply With Quote
Old 1st June 2010, 03:18 PM   #158
joemana is offline joemana  United States
diyAudio Member
 
Join Date: Oct 2006
Location: San Jose
[QUOTE=dvb-projekt;2203930]
What is the input voltage of the anode supply?
So you should adjust the two 1K0 resistors in the anode power supply to get the B+ to ≈120V.


Hi Oliver,

The input voltage anode supply is 220V. I replaced the original 1k resistors with 50k. I will try a lower value resistor later.

Thanks,

Joe
  Reply With Quote
Old 4th June 2010, 08:43 PM   #159
joemana is offline joemana  United States
diyAudio Member
 
Join Date: Oct 2006
Location: San Jose
Is the heatsink for the (LD1085v) regulator on Tube-I-zator suppose to be very hot?

When I use 12AX7 tube I can touch the top portion of the heat sink for a few seconds, while if I use the 6n6p (b+V =120V) it's VERY hot, I can't touch the heat sink for more than a second, is this normal?


Thanks,

Joe
  Reply With Quote
Old 4th June 2010, 08:50 PM   #160
diyAudio Member
 
dvb projekt's Avatar
 
Join Date: Feb 2009
Location: Willich, Germany
Blog Entries: 37
Send a message via Skype™ to dvb projekt
Yes. The 6N6P has more than twice heater current than the 12AX7.

Best,
Oliver
__________________
Reference TDA1541A DAC project PCBs / Tube-I-zator PCB / SSHV-Shunt PCB
Stock status in my Blog
  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
STK Professional V-6 Amp--need schematics wcarthur Instruments and Amps 0 21st April 2009 02:59 PM
I need a professional opinion... sparky3489 Car Audio 0 25th June 2006 04:31 AM
professional opinion rv1890 Multi-Way 2 12th January 2005 05:22 PM
Professional Anodizing - How to? tiroth Everything Else 20 30th January 2004 09:15 PM
Anyone tried Professional DIY PHILIPS CD kit ??? till Digital Source 6 4th June 2002 11:06 AM


New To Site? Need Help?

All times are GMT. The time now is 04:21 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