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Old 17th September 2010, 03:13 AM   #1
ricrado is offline ricrado  Dominican Republic
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Default citation 12 irf 130

Can you change irf 130 for irf 240 on citation 12 original article.?
What I have to do in the schematic.
I am having problem getting the irf 130 her in mi country.
thanks

Ricardo

just trying.......
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Old 17th September 2010, 05:51 AM   #2
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Sure you can! I used IRF3205 in my build, worked just fine. Though lateral mosfets may be better than hexfets.
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Old 18th September 2010, 02:01 AM   #3
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Laterals will have less bias drift with temp, but generally
more distortion (lower transconductance).

Either is worth a try.

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Old 18th September 2010, 10:19 AM   #4
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I am trying laterals, ordered a few from those class-d.com doodz making those class b modules.

Datasheet: http://jm.plantefeve.pagesperso-orange.fr/acd100nsd.pdf

At 3GBP a piece their among the cheapest laterals on the market.

I'm also planning to add current sources to the input and VAS stage, but more of that in my thread.
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Old 20th September 2010, 10:55 AM   #5
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Quote:
Originally Posted by Nelson Pass View Post
Laterals will have less bias drift with temp, but generally
more distortion (lower transconductance).

Either is worth a try.

Both design's from same brand ??
Magnatec. ALFET Lateral MOSFETs
TT electronics Semelab Limited - Magnatec Datasheets
TT electronics Semelab Limited - Magnatec Lateral MOSFET Pricing

Where are the P-spice parameters (I don't get reply from Magnatec) ??
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Old 20th September 2010, 12:02 PM   #6
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My laterals arrived today!! I wonder why they have switchecd places on Drain and Source as compared to any other mosfet like IRFP450 and such.
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Old 20th September 2010, 05:35 PM   #7
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Different physical structure of the chip make the case want
to be the Source.

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Old 21st September 2010, 06:42 PM   #8
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about this thread I have make an overview arround lateral MOSFET's (vintage and currently available):
Audio (Lateral) MOSFET's for Class AB - Overview, P-Spice URL's
highest level p-spice parameter highly appreciated
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Old 22nd September 2010, 03:52 AM   #9
ricrado is offline ricrado  Dominican Republic
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Default irf240

can it be irf 240 in standard way .similar to what cittation 12 have already in form.?
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Old 22nd September 2010, 08:08 AM   #10
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I used IRFP450 in my citation 12 which worked beautifully, i used 560ohm gate resistors, with the laterals i haad to increase the gate resistors to 2.2k to get rid of the oscillation.
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