Power supplies and their ambushes - Page 3 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 8th January 2005, 09:45 PM   #21
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
SY

I must admit, that does seem much more sensible to me. Perhaps the US legal system does have its good points after all!
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 8th January 2005, 09:51 PM   #22
byteboy is offline byteboy  Netherlands
diyAudio Member
 
Join Date: Jun 2003
Location: The Netherlands (East)
Default patent claims

Sorry guys for my previous post, couldn't help myself....

My try to get this topic "on-topic" again:

One of the most important things IMHO for applying for a patent is a deep knowledge of the technology involved to be sure that it is not patented before or worth patenting in the first place.

I cannot imagine, but I'have not studied nor looked it up specifically, that the basic PSU technology discussed isn't patented long time ago and patent free at this moment or "public domain" in any application?

I think the "patent-guru's" at the forum can dig up some "old and grey" patent claims?

Would be nice to see.......
__________________
The way you do things, things do you
  Reply With Quote
Old 8th January 2005, 10:46 PM   #23
moamps is offline moamps  Croatia
diyAudio Member
 
Join Date: Oct 2002
Location: Croatia
Quote:
Originally posted by yldouright
The same conditions apply to this as with my previous patent applications exposed via this public forum. Any and all diyaudio members may use this idea in their designs as long as it is not for profit or part of a commercial product or enterprise. If it is used for commerical purposes, you must obtain my written consent or forfeit all profits persuant from its use.
You're joking, right? The design you have published here is seriously flawed in the sense that it would simply melt down the transformer and/or rectifers.

Regards,
Milan
  Reply With Quote
Old 8th January 2005, 10:48 PM   #24
Keld is offline Keld  Sweden
diyAudio Member
 
Keld's Avatar
 
Join Date: Jan 2002
Location: Borås, Sweden, Tellus
Am I missing something here, To me it looks like a short circuit via 2 diodes.
  Reply With Quote
Old 8th January 2005, 10:49 PM   #25
moamps is offline moamps  Croatia
diyAudio Member
 
Join Date: Oct 2002
Location: Croatia
Exactly.
  Reply With Quote
Old 8th January 2005, 10:51 PM   #26
diyAudio Member
 
Join Date: Oct 2004
I don't see what innovation is worth patenting. There's nothing in that circuit that hasn't been done before.

I also fail to see any way it could reduce the noise. It uses twice as many diodes, with twice the series loss and twice the noise as are required.
  Reply With Quote
Old 8th January 2005, 10:54 PM   #27
diyAudio Member
 
mpmarino's Avatar
 
Join Date: Jun 2004
Location: Crunchville, where I don't fit in.
Hummhomm:
Quote:
Class A is like driving with the parking brake on
I like that..good analogy.

But remember, driving with the parking brake on can be a lot of fun, especially when it's cold and snowy!

No thread jack intended
  Reply With Quote
Old 8th January 2005, 10:57 PM   #28
uli is offline uli  Austria
diyAudio Member
 
Join Date: Dec 2002
Location: Vienna, Austria
Quote:
Originally posted by hummhoom
There's nothing in that circuit that hasn't been done before.

You mean, s..t happens ?

I bet the diodes go first, this guy owns a 8kw xfmr.

Uli

__________________

'Jazz is not dead, it just smells funny' F.Zappa
  Reply With Quote
Old 8th January 2005, 11:08 PM   #29
diyAudio Member
 
Join Date: Aug 2002
Location: New York, NY
Send a message via AIM to yldouright Send a message via Yahoo to yldouright
moamps, keld and hummhoom
Thanks for taking the time to look over what I presented. Okay, I know what I want to accomplish but perhaps I can't draw it in an understandable fashion so I will try and explain with words. In a transformer with a single center tap and two secondaries, we have two poles on opposite sides of a common center point. The first pole winding to the center point creates the first secondary and the winding from the center point to the opposing pole creates the other secondary. When we use two bridges to create the positive and negative supply, we have one common return point on which to connect both the bridges. The consensus is that we have a short but does it have to be?
  Reply With Quote
Old 8th January 2005, 11:20 PM   #30
moamps is offline moamps  Croatia
diyAudio Member
 
Join Date: Oct 2002
Location: Croatia
Quote:
Originally posted by yldouright
.... In a transformer with a single center tap and two secondaries.... When we use two bridges to create the positive and negative supply...
Hi,
I would appreciate it if you could re-draw the design then. Anyways, connecting two bridges to a transformer with a single center tap does not make much sense, if any.

Regards,
Milan
  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
Parallel a dual power supply or two power supplies? Thunau Power Supplies 12 16th February 2007 04:21 AM
HV power supplies santa Swap Meet 0 17th January 2005 10:52 PM
Power Supplies guitargully Parts 0 6th February 2004 03:45 AM
Regulated Power Supplies for Low Power Amps PTL60 Solid State 18 6th February 2002 06:24 AM


New To Site? Need Help?

All times are GMT. The time now is 01:38 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