Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free > Open ReVolt: open source DC motor controller
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-04-2014, 10:26 AM   #1 (permalink)
EcoModding Lurker
 
Join Date: Nov 2012
Location: West
Posts: 7
Thanks: 1
Thanked 3 Times in 3 Posts
Open Revolt Sepex

I see a switching time of 3us used often on the list for the standard MOSFET Open Revolt.

Is that number accurate? It seems a little slow. A quick R/C calculation suggests a number closer to 1us. Does anyone have an accurate measured value?

I think I'm giving up on a passive (R/C) shoot-through prevention in favor of a software solution. Since the controller already uses phase-corrected PWM this should be easy enough and more flexible but it would be good to start with an accurate switching number.

Sorry, don't know why the image didn't make it when I first posted. It's attached now. The daughter board plugs into the processor socket, U6 and one of the caps (for 12V). The crystal moves to the daughter board so that it's not in the way of the new board.

Attached Thumbnails
Click image for larger version

Name:	sepex.jpg
Views:	90
Size:	70.1 KB
ID:	15131  

Last edited by artc; 06-04-2014 at 09:17 PM.. Reason: Added image
  Reply With Quote
The Following User Says Thank You to artc For This Useful Post:
MPaulHolmes (01-17-2015)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 01-17-2015, 03:59 PM   #2 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,829

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,366
Thanked 1,115 Times in 730 Posts
I don't think it was 3us. I don't remember though. That is a very pretty daughter board. Sorry I didn't see this message sooner.

__________________
kits and boards
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com