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My MOSFET amplifier designed for music.
My MOSFET amplifier designed for music.
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Old 8th June 2008, 11:42 AM   #31
Mooly is offline Mooly  United Kingdom
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My MOSFET amplifier designed for music.
Hi,
Not as efficient, but it is by far the most linear configuration thanks to the local feedback. It also copes much better with lower resistance loads.
Regards Karl
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Old 9th June 2008, 05:44 AM   #32
space2000 is offline space2000  Singapore
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hi mooly,

my supplier says about 2SJ162 and 2SK1058, his brand name is sanken. do you think it should be ok to order? i know it is actually hitachi right?

thanks
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Old 9th June 2008, 06:23 AM   #33
Mooly is offline Mooly  United Kingdom
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My MOSFET amplifier designed for music.
Hi Space,
Can't answer that one. If they are from a reputable supplier they should be fine. Renesas ( Formerly Hitachi Semiconductor ) is usually the name we see here. If they are genuine Sanken manufacture I am sure they will be fine.
Anyone else heard of Sanken branded lateral FET's ?
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Old 9th June 2008, 06:43 AM   #34
space2000 is offline space2000  Singapore
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hi mooly,

sorry it was mistake by my supplier....he says it is hitachi.....so now it is ok...i already place the order for it...hope will be arive soon.... $9 each...how much cost in your place?

let you know....
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Old 9th June 2008, 06:52 AM   #35
Mooly is offline Mooly  United Kingdom
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My MOSFET amplifier designed for music.
That's good Over here about 6 or 7 GBP I think. The last ones I ordered were for this amp, and that was about 4 years ago !
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Old 9th June 2008, 07:39 AM   #36
Lumba Ogir is offline Lumba Ogir  Sweden
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Mooly,
the CFP is prone to oscillation because of the closed-loop involved, increasingly with poorer bandwidth. Lateral MOSFETs are however extremely fast and partially for that reason unquestionably the best sounding output devices. Also, the CFP is very linear.
But it does not explain everything.
Can someone say why does this topology create a distortion spectrum so close to the ears liking?
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Old 9th June 2008, 07:53 AM   #37
peranders is offline peranders  Sweden
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My MOSFET amplifier designed for music.
Quote:
Originally posted by Lumba Ogir
Lateral MOSFETs are however extremely fast
Is this really true?
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Old 9th June 2008, 08:11 AM   #38
Lumba Ogir is offline Lumba Ogir  Sweden
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peranders,
it is very much true.
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Old 9th June 2008, 09:42 AM   #39
richie00boy is offline richie00boy  United Kingdom
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My MOSFET amplifier designed for music.
Interesting design. It's extremely similar to something I designed and made a year or two ago.
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Old 9th June 2008, 10:38 AM   #40
space2000 is offline space2000  Singapore
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hi mooly,

i saw in diaram that u rfr about "R8 select on test", what is vlu we should start first? and which u recomend to me to try for best?
also u said its still need some zdiod for final design....can u pls tells me more about it?

thank you
michael.
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