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simplest MOSFET firing (gate drive) circuit


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mandip



Joined: 21 May 2007
Posts: 5
Helped: 2


Post29 May 2007 19:03   

simplest MOSFET firing (gate drive) circuit


i think u all have been tensed for switching the mosfet.....its not a big deal....just u need to do is...

*generate a sawtooth waveform, can be generated by timer's output through charging and discharging of capacitor.....

*compare the sawtooth waveform with the DC value ....this generates a PWM output..

*this PWM output from comparator can be fed into the gate of MOSFET

*and nothing but it just works...
i have tried it.....

any comments on this post is warmly welcomed
thanks
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pokhara



Joined: 29 May 2007
Posts: 0
Helped: 2


Post29 May 2007 19:19   

simplest MOSFET firing (gate drive) circuit


The concept you have applied is really greate.....I think same thing can be done using digital logic gate also.......it becomes more simpler.
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mandubhai



Joined: 30 May 2007
Posts: 1
Helped: 1


Post30 May 2007 12:13   

simplest MOSFET firing (gate drive) circuit


i too tried this but instead i used a pwm output from the timer circuit (after generating pwm output from timer) but i couldn't take the feedback from the timer....will try this...any ways great work

Added after 1 minutes:

i would be grateful if you could send me the CKT
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