Help for Main Transformer Spec for CCDA - Page 3 - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 16th September 2012, 10:39 AM   #21
SKLau is offline SKLau  Australia
diyAudio Member
Join Date: Dec 2004
Location: Melbourne
I have a grounding question.

The HV centre-tapped schematic shown above has a dot line on jumper J13 which bridges the PCB’s ground to the chassis. If I use the RCA jack isolated from the chassis. Do I jumper the J13? If not where do I ground the signal ground to the chassis?

I want to use a LED to indicate the CCDA is on. What is the simple way to do it?
  Reply With Quote
Old 16th September 2012, 11:22 PM   #22
diyAudio Moderator
TonyTecson's Avatar
Join Date: May 2003
Location: Palatiw, Pasig City
470 ohm 1 watt resistor in series with the led and then connect to the filament supply...
planet10 needs your help: Let's help Ruth and Dave...[B
  Reply With Quote
Old 16th September 2012, 11:33 PM   #23
SKLau is offline SKLau  Australia
diyAudio Member
Join Date: Dec 2004
Location: Melbourne
Thanks Tony for the LED connection.
  Reply With Quote
Old 26th May 2013, 09:08 AM   #24
SKLau is offline SKLau  Australia
diyAudio Member
Join Date: Dec 2004
Location: Melbourne
Just finished the building of the CCDA. After tuning the R9 to 6.8k, the sound is quite amazing. Good ambience and rich harmonics.

A special thanks to Jim who helped me getting a good quality transformer with less cost and
the wiring of the heaters in voltage doubler configuration.

The cost of the EDCOR-XPWR196-240 + shipping to Australia is USD108.

The EDCOR is well build and solid with no buzz and hum. The CCDA is quiet.

I deployed the 4 x 100uf 500v Black Gates from my dismayed kit built to be used in the CCDA project. They are happy to find a home to show their performance.

Here are the pics for the CCDA.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote


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
Transformer Out of Spec? DreadPirate Solid State 16 20th December 2010 05:18 PM
transformer spec skipper Tubes / Valves 3 29th January 2008 10:11 PM
Help with a transformer spec please? Pbassred Solid State 1 18th June 2007 12:38 PM
Help for SE Main Transformer baikostov Power Supplies 4 24th September 2006 08:01 AM
Spec on transformer for Aleph 5? Tony D. Pass Labs 8 24th April 2002 12:49 PM

New To Site? Need Help?

All times are GMT. The time now is 08:10 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2