Author Topic: is a stuck mosfet fixable?  (Read 1061 times)

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Offline BANETopic starter

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is a stuck mosfet fixable?
« on: February 27, 2011, 04:14:39 PM »
Hello all,
It turns out i accidently hooked up my N channel mosfet from radio shack wrong and now it is stuck open.  is it possible to un stick it or is it junk?

thanks
« Last Edit: February 27, 2011, 05:21:00 PM by BANE »

Offline Soeren

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Re: is a stuck mosfet fixable?
« Reply #1 on: February 27, 2011, 05:48:34 PM »
Hi,

It's toast.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

Offline BANETopic starter

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Re: is a stuck mosfet fixable?
« Reply #2 on: February 27, 2011, 06:04:38 PM »
Quote
It's toast.
as i feared :'(.........good thing im passing by radio shack tomorrow

Offline Soeren

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Re: is a stuck mosfet fixable?
« Reply #3 on: February 27, 2011, 06:17:01 PM »
Yes, you probably got either the gate-drain or the drain-source welded together internally.

A large-ish current through it might reveal which, by the voltage drop over it - drain-source welded would give a ~0V drop, gate-drain would have a slightly higher drop (but you may need to compare it with a good one by connecting the gate and drain).
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

 


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