|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Chip Amps Amplifiers based on integrated circuits |
  |
|
|
|
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 |
13th October 2011, 07:25 PM
|
#1 |
|
diyAudio Member
Join Date: Jun 2011
|
Crazy MOSFET Mayhem
What do you think?
 Got the idea from the SMPS i am building... All N-channel mosfets. Should be pretty easy to match. Of course bias stage and thermal tracking would be nice... |
|
|
14th October 2011, 10:12 AM
|
#2 |
|
diyAudio Member
Join Date: Jun 2011
|
...and the PWM control... ;-)
|
|
|
|
15th October 2011, 12:45 AM
|
#4 |
|
diyAudio Member
Join Date: Nov 2007
Location: Dallas
|
All N-Ch necessitates bigger voltage swing
source follower gates than drain followers. You can't just cross the drives as drawn... Top two BJTs are miswired and won't work. Will short circuit from + to minus as a pair of forward biased diodes... Gate drive transformers might be a quick fix. Last edited by kenpeter; 15th October 2011 at 12:47 AM. |
|
|
|
15th October 2011, 02:45 AM
|
#5 |
|
diyAudio Member
|
You would probably want to put the power-booster INSIDE the feedback loop.
Take a look at these cool application notes! http://www.national.com/an/AN/AN-272.pdf http://cds.linear.com/docs/Application%20Note/an18f.pdf http://www.cirrus.com/en/pubs/appNote/Apex_AN14U_C.pdf |
|
|
|
17th October 2011, 09:14 AM
|
#6 |
|
diyAudio Member
Join Date: Jun 2011
|
Everyone is absolutely right!
I soon realised, this will not work... Good i did not make a prototype yet! :-) The BJTs are wrong... And it must be made class-AD to make it work... And therefore i am in the wrong forum!!! ;-) PS: My SMPS is working great though... I will post my schematic to the PowerSupply forum later... Simple and easy! No special components needed. And crazy powerfull!!! I.E. the REAL Mosfet Mayhem... Thanks all! |
|
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Lovely to be here, wonder what mayhem may fallow :D | mindyoursound | Introductions | 3 | 3rd March 2011 09:35 PM |
| Am I crazy? | TundraLTD | Subwoofers | 10 | 24th July 2010 01:40 AM |
| Crazy Clipping Behavior Quasi Complementary MOSFET Citation 12 TAA Book | tiefbassuebertr | Pass Labs | 11 | 25th June 2010 01:50 PM |
| [NOOB] Power supply mayhem | Andreq | Power Supplies | 13 | 9th June 2009 12:38 AM |
| Mosfet amp goes crazy at clipping | Zero Cool | Solid State | 22 | 23rd May 2007 12:38 AM |
| New To Site? | Need Help? |
| Page generated in 0.07096 seconds (84.41% PHP - 15.59% MySQL) with 10 queries |
