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 7th July 2010, 03:20 AM   #1291
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Quote:
Originally Posted by Tripmaster View Post
Hi

Are they required if I am supplying the LED with DC rather than AC?
A/C to LED's? Maybe once, but not twice?

Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 7th July 2010, 07:52 AM   #1292
diyAudio Member
 
Tripmaster's Avatar
 
Join Date: Feb 2008
Location: UK
Quote:
Originally Posted by Renron View Post
A/C to LED's? Maybe once, but not twice?

Ron
Hi Ron

Possibly the wrong choice of words in no particular order

In the past I have created a low voltage AC supply by adding a separate winding around a toroidal transformer. I guess I should have said the diode wired in parallel with the LED creates a simple half wave rectifier!

Click the image to open in full size.
__________________
Richard
My photostream: http://www.flickr.com/photos/59839778@N04/
  Reply With Quote
Old 7th July 2010, 09:44 AM   #1293
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
I know what you are asking/describing.
__________________
regards Andrew T.
  Reply With Quote
Old 7th July 2010, 03:34 PM   #1294
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Quote:
Originally Posted by Tripmaster View Post
Hi Ron

Possibly the wrong choice of words in no particular order

In the past I have created a low voltage AC supply by adding a separate winding around a toroidal transformer. I guess I should have said the diode wired in parallel with the LED creates a simple half wave rectifier!

Click the image to open in full size.
Yes Andrew,
I too knew that a diode could be used in that configuration. However, not all of us are as knowledgeable as you (I'm not anywhere close) and I'm sure someone who just happened to read the above A/C reference would try it on a LED. (No Sarcasm intended)
We need to think of everyone who might read our posts and their experience level. Which is why we repeat ourselves on the Grounding / Neutral differences.
It was not all that long ago I was a total newbie and didn't know LEDs were D/C only. I've lost the total part but I'm still a newbie.

Thanks for the pic and explanation Tripmaster. How do you know how many windings to put on the torrid? Ratio based? Trial and Error?

Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 7th July 2010, 05:02 PM   #1295
diyAudio Member
 
Tripmaster's Avatar
 
Join Date: Feb 2008
Location: UK
Quote:
Originally Posted by Renron View Post
Yes Andrew,
I too knew that a diode could be used in that configuration. However, not all of us are as knowledgeable as you (I'm not anywhere close) and I'm sure someone who just happened to read the above A/C reference would try it on a LED. (No Sarcasm intended)
We need to think of everyone who might read our posts and their experience level. Which is why we repeat ourselves on the Grounding / Neutral differences.
It was not all that long ago I was a total newbie and didn't know LEDs were D/C only. I've lost the total part but I'm still a newbie.

Thanks for the pic and explanation Tripmaster. How do you know how many windings to put on the torrid? Ratio based? Trial and Error?

Ron
Hi Ron

It was trial and error. The number of turns required for the desired voltage will depend on the size of the transformer. I think I'll just tap off of the PCBs , but as the transformer is at the front of the case it may look neater in terms of cable length.
__________________
Richard
My photostream: http://www.flickr.com/photos/59839778@N04/
  Reply With Quote
Old 8th July 2010, 06:17 PM   #1296
cviller is offline cviller  Denmark
diyAudio Member
 
cviller's Avatar
 
Join Date: Dec 2005
Location: Copenhagen
Blog Entries: 2
I have gotten a few mails about availability of my boards and I'll answer here to everyone. I am currently in the process of moving back to Denmark and most of my stuff including boards have been shipped by sea, so I'll only get them back in the middle of August. At that time I'll be able to sell the remaining boards.
  Reply With Quote
Old 8th July 2010, 09:22 PM   #1297
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Christian,
I for one, will miss you. ;(

Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 3rd August 2010, 12:04 PM   #1298
diyAudio Member
 
Join Date: Mar 2003
Location: midwest
If available, I'd like a set of the circuit boards, diode boards and P/S board for one stereo amp. I can wait until mid August, no problem. Will they be available then or do I need to pay pal now to reserve?

Thanks, and have a good move,

Russellc
  Reply With Quote
Old 3rd August 2010, 06:58 PM   #1299
cviller is offline cviller  Denmark
diyAudio Member
 
cviller's Avatar
 
Join Date: Dec 2005
Location: Copenhagen
Blog Entries: 2
I'll open the order site when I'm ready to sell the boards. Hopefully, I'll get them late this week, but it might take some time to find suitable envelopes if the ones I have here in Denmark are too small.
I'll post on this thread when I'm ready to receive orders.
  Reply With Quote
Old 3rd August 2010, 07:18 PM   #1300
diyAudio Member
 
Join Date: Mar 2003
Location: midwest
Quote:
Originally Posted by cviller View Post
I'll open the order site when I'm ready to sell the boards. Hopefully, I'll get them late this week, but it might take some time to find suitable envelopes if the ones I have here in Denmark are too small.
I'll post on this thread when I'm ready to receive orders.
Thank you, I'm needing a set!

Russellc
  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



New To Site? Need Help?

All times are GMT. The time now is 07:30 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