LM3886 transformer/bridged diode... - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

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 13th December 2011, 04:06 AM   #11
! is offline !  United States
diyAudio Member
 
Join Date: Jun 2005
Location: Midwest
Look at the spec sheets for a (8A in this case) diode. I'll randomly pick the first one a web search finds, http://www.nxp.com/documents/data_sheet/BYC58X-600.pdf

8A is only the average current rating. Non-repetitive forward peak (for 10ms) is 110A.

Last edited by !; 13th December 2011 at 04:09 AM.
  Reply With Quote
Old 13th December 2011, 09:59 AM   #12
AndrewT is online now AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
10ms is the whole half wave period.
A pulse from the mains waveform that remains at full peak amperes for just 10% of the halfwave will be 1ms.
If the current ramps up to peak and down again then the time at peak or exceeding 50% of peak amperes is very likely to be <<1ms duration.
The 500us single pulse transient capability of the diode is likely to be a few (or many) times the 10ms limit.
__________________
regards Andrew T.

Last edited by AndrewT; 13th December 2011 at 10:15 AM.
  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
My Bridged LM3886 robertj88 Chip Amps 12 31st October 2010 03:47 PM
100w Bridged lm3886 Ted205 Chip Amps 2 3rd April 2009 07:29 AM
Bridged LM3886 (again ?) Puffin Chip Amps 24 14th February 2008 08:10 AM
resistors before the diode in a bridged rectifier: what does it do? jarthel Parts 2 5th September 2006 04:38 PM
Looking for a PCB for bridged LM3886 zafira1981 Chip Amps 1 29th March 2006 03:39 AM


New To Site? Need Help?

All times are GMT. The time now is 10:50 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