Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Inrush limiting circuit
Inrush limiting circuit
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 1st October 2010, 10:26 AM   #1
pona is offline pona
diyAudio Member
Join Date: Oct 2010
Default Inrush limiting circuit

Can anybody please explain the use of mosfet switch on the return path?
Attached Files
File Type: pdf MotorolaAN1542.pdf (169.4 KB, 82 views)
  Reply With Quote
Old 16th October 2010, 09:32 AM   #2
metalsculptor is offline metalsculptor  Australia
diyAudio Member
Join Date: Sep 2010
Location: Melbourne
Quite a neat little circuit, using the return path makes the gate drive circuitry simpler. Because the SMPS output is isolated from the input it makes no difference to the supply which rail of the DC supply the inrush current limiter is installed.

The mosfet is not being used as a switch it is being used in linear mode to maintain constant dv/dt across the mosfet which results in constant current charging of the input capacitors.
  Reply With Quote


Inrush limiting circuitHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Inrush current limiting heater filaments boywonder Tubes / Valves 14 2nd February 2009 07:33 AM
Inrush current limiting necessary for EI transformers Bama Slamma Power Supplies 10 6th November 2006 05:08 PM
inrush current limiter circuit Holger Barske Elektor 12 14th October 2006 10:34 PM
Limiting Inrush?? Deltat Power Supplies 11 31st March 2006 03:38 PM
Inrush Current Limiting Circuit haldor Parts 22 8th October 2004 03:06 PM

New To Site? Need Help?

All times are GMT. The time now is 10:44 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio