mosfet gate drive circuit

Status
Not open for further replies.
M

maxim10373

Advanced Member level 4
Joined
Feb 26, 2010
Messages
116
Helped
1
Reputation
2
Reaction score
2
Trophy points
1,298
Activity points
2,066
This picture shows a Mosfet gate drive circuit .What is the value of C1 in it?
how to find this ?

Help me
maxim10373
 

Attachments

  • mosgt.png
    37.6 KB · Views: 153
Hi,

This is a nonsense circuit. At least without values, voltages, timing, connection..

There are many proven Mosfet gate drive circuits.
There are dedicated ICs
There are application notes
There are design examples
And a lot more very informative reliable informations.
Why don't you use them ... why do you use random, incomplete, not documented schematics?

Klaus
 

That cap is a speed up capacitor to increase NPN switching speed.

Google "speedup capacitor bipolar npn", a number of discussions.


Regards, Dana.
 

Hi
Whats that circuit ? If you wanna drive a mosfet with pulse or pwm or sth , there are lots of good options available for instance ics like ir21xx series or perhaps transformer drivers or maybe totem pole circuit or ....
Why that circuit ?
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…