[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4752: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4754: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4755: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4756: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
OUPower.com • View topic - PWM

PWM

Here we will discuss many topics on electronic designs and circuits for various functions. PIC Chip programming has enormous potential in so many applications, that will be included in this forum as well.

Chemelec...

Postby snobody » Sat Jun 28, 2008 1:53 pm

I would like to purchase one of your modded circuit current limiting pwm's off you if possible.
perhaps u could email me ... thring@shaw.ca
I know you have undergone surgery, and not sure if youre up to it yet
snobody
 
Posts: 9
Joined: Sat Apr 19, 2008 10:40 pm

Re: Chemelec...

Postby chemelec » Sat Jun 28, 2008 2:44 pm

If you Email Me, the Word "ELECTRONIC" MUST appear in the Subject Line.

My NEW Website is:
http://chemelec.com
chemelec
Regular Poster
 
Posts: 646
Joined: Sun Jan 23, 2005 1:53 pm
Location: B.C. Canada

awwww

Postby snobody » Sat Jun 28, 2008 3:34 pm

snobody
 
Posts: 9
Joined: Sat Apr 19, 2008 10:40 pm

Re: Pulse Width Modulator Kit

Postby chemelec » Sat Jun 28, 2008 11:36 pm

If you Email Me, the Word "ELECTRONIC" MUST appear in the Subject Line.

My NEW Website is:
http://chemelec.com
chemelec
Regular Poster
 
Posts: 646
Joined: Sun Jan 23, 2005 1:53 pm
Location: B.C. Canada

Re: Pulse Width Modulator Kit

Postby FlashBang » Sun Jun 29, 2008 12:17 am

Just becuase you are Paranoid doesn't mean that they are NOT out to get you!
FlashBang
Regular Poster
 
Posts: 270
Joined: Sun Jun 01, 2008 10:58 pm
Location: Florida

Way too much!

Postby SeaMonkey » Sun Jun 29, 2008 7:49 pm

User avatar
SeaMonkey
Regular Poster
 
Posts: 396
Joined: Thu Aug 09, 2007 4:00 pm
Location: Dystopia, USSA

Postby a3holerman » Sun Jun 29, 2008 8:47 pm

a3holerman
Regular Poster
 
Posts: 44
Joined: Wed May 28, 2008 2:24 am
Location: Cape Cod

Postby chemelec » Mon Jun 30, 2008 12:03 am

If you Email Me, the Word "ELECTRONIC" MUST appear in the Subject Line.

My NEW Website is:
http://chemelec.com
chemelec
Regular Poster
 
Posts: 646
Joined: Sun Jan 23, 2005 1:53 pm
Location: B.C. Canada

Gate Input Capacitance

Postby SeaMonkey » Mon Jun 30, 2008 4:00 am

User avatar
SeaMonkey
Regular Poster
 
Posts: 396
Joined: Thu Aug 09, 2007 4:00 pm
Location: Dystopia, USSA

Postby Looking In » Mon Jun 30, 2008 7:09 am

Rich (Looking In)
((((Is it really so difficult to tell a good action from a bad one? I think one usually knows right away or a moment afterward, in a flash of regret.)))) BOOM
Looking In
Regular Poster
 
Posts: 367
Joined: Thu Dec 22, 2005 11:06 am

Parts List

Postby huck » Mon Jun 30, 2008 6:29 pm

huck
Regular Poster
 
Posts: 140
Joined: Wed May 28, 2008 12:05 pm

PWM Circuit Examples

Postby SeaMonkey » Mon Jun 30, 2008 8:43 pm

User avatar
SeaMonkey
Regular Poster
 
Posts: 396
Joined: Thu Aug 09, 2007 4:00 pm
Location: Dystopia, USSA

Postby a3holerman » Tue Jul 01, 2008 5:00 pm

a3holerman
Regular Poster
 
Posts: 44
Joined: Wed May 28, 2008 2:24 am
Location: Cape Cod

MosFet a goodun'

Postby SeaMonkey » Tue Jul 01, 2008 10:22 pm

Your research into the specs on your MosFet has affirmed that it is indeed a high current device. That is very good.

The kit may be limited to 20 Amperes in order to keep the MosFet cool and to keep from overstressing the circuit board copper. And it may be that the drive circuit is less than ideal which could cause the MosFet to dissipate more heat even at 20 Amperes.

To drive the MosFet with enough current into the Gate Input Capacitance to assure very fast switching you need a MosFet driver chip. It is not difficult to add those into an existing circuit board with a little creativity.

Once that is done you'll need to "beef up" the circuit board copper in those areas where the higher current will flow so that it won't be destroyed.

To handle 100 Ampere pulses safely the wiring will have to be quite hefty.

Looks to me like it's all doable.
User avatar
SeaMonkey
Regular Poster
 
Posts: 396
Joined: Thu Aug 09, 2007 4:00 pm
Location: Dystopia, USSA

Postby huck » Thu Jul 03, 2008 10:09 pm

huck
Regular Poster
 
Posts: 140
Joined: Wed May 28, 2008 12:05 pm

Next

Return to Electronics, Circuits & PIC Chips

Who is online

Users browsing this forum: No registered users and 1 guest