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Old 7th February 2006, 05:08 AM   #21
Eva is offline Eva  Spain
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Sorry, couldn't resist...

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Old 7th February 2006, 05:27 AM   #22
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How you doing Eva

So what have we got here.... Hmmm

Input Gate and Base Capacitance

And your point is???

This might have and would have everything to do with High S
Speed switching when the device is completely turned on and the need to discharge the Gate Charge as quickly as possible.
Gate C does have a huge effect
But in Analog Amplifiers this is far less important and the fact is My amplifier already has a Ft of well over a 1mhz. for Audio I think that is more than fast enough.
I have been using for years and do use on a daily bases IRF devices and other types Mosfets. I don't have a problem with them as you seem to have and I don't have a problem with getting very high speed from them.

Anyway thank you for your input....
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Old 7th February 2006, 08:23 AM   #23
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Quote:
Originally posted by lgreen
...ooops is this thing on?
Still shouting in the closet, Mr Green ?
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Old 7th February 2006, 07:05 PM   #24
Electrons are yellow and more is better!
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Anthony, why don't you go for high class double sided pcb's? They aren't that unreachable. Just look at all group buys and see what they cost. You could also take a spin with a group buy the first run.
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Old 7th February 2006, 07:11 PM   #25
Electrons are yellow and more is better!
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I have used IRFD120 and IRFD9120 in my monster headphone amp, pretty nice.
Click the image to open in full size.
The glued transistor is a BS170 for temperature stablisation. The amp is an advanced experiment in class A but unfortunatly it was only good in theory, the class A regulator that is. The rest works like clockwork. The idea was class A with constant temperature but this requires more development. A MCU would have been very nice to use here.

Big picture here
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Old 7th February 2006, 07:19 PM   #26
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Hi peranders

Thats exactly what I am getting made now for the NX150.
The PCBs will be 3 ounce copper Double Sided, Plated Through Holes and screen printed and Solder Masked.

Should look very nice I recken...

Thanks for the suggestion, Looks Like we were on the same wavelength.
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Old 7th February 2006, 07:20 PM   #27
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Looks Good!
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Old 7th February 2006, 07:46 PM   #28
Electrons are yellow and more is better!
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Quote:
Originally posted by The Saint
Hi peranders

Thats exactly what I am getting made now for the NX150.
The PCBs will be 3 ounce copper Double Sided, Plated Through Holes and screen printed and Solder Masked.

Should look very nice I recken...

Thanks for the suggestion, Looks Like we were on the same wavelength.
If you want any special hints in general, let me know. I have made hundreds of pcb's for production so I know at least some (don't dare to say "much" ). have also made pcb's with thick copper, 95 um (almost 3 oz. 105 um = 3 oz.).

I you want a review you know where you can reach me.

Hugh, what about you, an AKSA Nirvana DeLuxe Special Edition. Wouldn't it be something? I'm pretty sure, no very sure, that you could create interest for such a board.
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Old 7th February 2006, 08:21 PM   #29
tinitus is offline tinitus  Europe
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Hi PA, why use such fine printboard....your solder looks like sshh..., sorry.
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Old 7th February 2006, 08:35 PM   #30
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The soldering on that pic looks perfect to me! LOL I'd like to see your soldering magnified that much
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