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shorting mechine control using AT89C51
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caze
Mon Jun 30 2008, 05:51AM
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hi @ arun,

my silly question was not that

i mean what i wantd to know is .."" Is there any procedure/rule/formula to determine the values of driver MOSFET depending on load.?""

Like while determining the GENERAL TRANSISTOR for a load we do following
1> transistor current must be greater then load current.
2>transistor min. current gain must be 5 times the load crt. devided by max. IC crt.
3>Rb=(Vc x Hfe)/(5 x Ic) *Vc=IC supply voltage.
or Rb=(.2 x Rl x Hfe)




caze
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caze
Fri Jul 04 2008, 11:24AM
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hi @ arun ,

i am so sorry for my last post.. i would't have post like that ..

its was really a stupid thing done by me ..

m so sory for that....
caze
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Arun Kumar V
Sun Jul 06 2008, 07:31PM

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hi caze,

you don't have to be too formal, i was just trying to emphasize that some times these things are not mentioned in any text books and you have to rely on your experience and gut feeling.

the mosfets i suggested are used extensively in all branded and unbranded Power Inverters and are available in plenty and they suit your task.

and what is the progress in the project


Arun
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caze
Sat Aug 02 2008, 05:36AM
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hi everyone ,

my project is finished and its in final stage .
thanks to everyone for their help and time...
caze
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Arun Kumar V
Sun Aug 03 2008, 12:13AM

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Hello Caze,

Congrats on completion of your project !




Arun
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Ajay
Mon Aug 04 2008, 07:12AM
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Congrats caze
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