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Old 9th September 2002, 12:53 AM   #1
jleaman is offline jleaman  Belgium
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Default New amp design

Well here it is i finaly got is and scanned it. it is my dads layout and design but here it is have a look any sujestions are welcome.. it is a fet design and produces about 75watts class ab

J'
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Old 9th September 2002, 01:57 AM   #2
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Hi Jason

I looks alot like IRF's application note ampifier schematic.


Regards

Anthony
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Old 9th September 2002, 01:58 AM   #3
jleaman is offline jleaman  Belgium
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yes yes it is verry close but has been changed alittle.. new board layout and ect ect components have been changed. too..
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Old 9th September 2002, 04:24 AM   #4
jleaman is offline jleaman  Belgium
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can any one sujest some input or upgrades..

J
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Old 9th September 2002, 04:31 AM   #5
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I would add 220 Ohm Gate resistors and 0.22 Ohm 5 watt Source resistors and replace the IRF100 devices for IRFP240's or something similiar.

Regards

Anthony
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Old 9th September 2002, 04:35 AM   #6
jleaman is offline jleaman  Belgium
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well curently there are irf 540's in there you stuill sujest irfp240's i have a whole pile of them too.. from my n-channel amp..

HEHE

Hey anthony do you still have any n-channelboards instock..?

J'
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Old 9th September 2002, 04:38 AM   #7
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Yep, I still a few left in stock.

Anthony
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Old 9th September 2002, 04:40 AM   #8
jleaman is offline jleaman  Belgium
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so i should use irfp240's in this sircuit..?
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Old 9th September 2002, 04:47 AM   #9
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You can if you wish , they should work fine...

Anthony
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Old 9th September 2002, 05:09 AM   #10
jleaman is offline jleaman  Belgium
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will i have to change any parts in the schematic or just leave it and put the irfp240's in and re bias it..
do i change the input voltage or keep it at 42 volts and what do you think that my power out will be.. im not looking for lots but just ceriousse.

J
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