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Old 20th April 2010, 03:41 PM   #1
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Default Combo MOSFET 50W÷500W
My last little thing. Before completion.

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Excuse flawed scheme IRFP9240PbF in Eagle (C3-4), thank you.
Last edited by Federmann; 20th April 2010 at 03:57 PM.
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Old 20th April 2010, 03:43 PM   #2
yaman33 is offline yaman33  Turkey
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what is this
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Old 20th April 2010, 04:11 PM   #3
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Quote:
Originally Posted by yaman33 View Post
what is this
Combo guitar amplifier.
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Old 20th April 2010, 06:10 PM   #4
wahab is offline wahab  Algeria
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500 watts with two pairs of power mosfets ?...

The VAS cant drive directly the mosfets, there
will be much more distorsion that if you add an
emitter follower pair as buffers...
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Old 20th April 2010, 06:35 PM   #5
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Quote:
Originally Posted by wahab View Post
500 watts with two pairs of power mosfets ?...

The VAS cant drive directly the mosfets, there
will be much more distorsion that if you add an
emitter follower pair as buffers...
2 pairs of only 250W, 500W for the bridge (2+2 pairs).
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Old 20th April 2010, 06:55 PM   #6
wahab is offline wahab  Algeria
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Quote:
Originally Posted by Federmann View Post

2 pairs of only 250W, 500W for the bridge (2+2 pairs).
For 250 watts, it s not enough either...
4 pairs is a bare minimum....
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Old 20th April 2010, 07:07 PM   #7
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Quote:
Originally Posted by wahab View Post
For 250 watts, it s not enough either...
4 pairs is a bare minimum....

For 90V output Vp-p (250W/4Ω), just a source of ± 48V. 8Ω bridge.
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Old 20th April 2010, 07:47 PM   #8
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Second half
Last edited by Federmann; 20th April 2010 at 08:04 PM.
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Old 22nd April 2010, 08:55 AM   #9
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Basic size 175 mm x 50mm
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Old 22nd April 2010, 02:01 PM   #10
HighTec is offline HighTec  Croatia
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Hi Federmann,

Which EDA/CAD program are you using? Altium Designer is exellent but unfortunately it can't display soldered pads. Solidworks?
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