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Old 5th May 2012, 03:34 PM   #11
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just as a reference, SY's article on "His Master's Noise" will give some practical hints on application of the depletion MOSFET CCS. His Master's Noise: A Thoroughly Modern Tube Phono Preamp

He also used depletion mosfet's on the Impasse preamplifier, and the article has popped up on his site with the courtesy of Elektor: http://syclotron.com/ImPassePreamplifier.pdf
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Old 5th May 2012, 04:23 PM   #12
euro21 is offline euro21  Hungary
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Originally Posted by akimmet View Post
As I was told in the past about this, Mouser is only authorized to sell IXYS components in the USA
Sorry, it's false.
Mouser transport Ixys parts to abroad, with some restrictions (not all products).
For example 01N100D not available. :-(
But DN2540 transportable, we bought it several times.
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Old 7th May 2012, 11:19 AM   #13
RuiR is offline RuiR  Portugal
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Thank you all.

I have to say i already built the amp and used DN2540 instead of the IXCP10M45S because of difficulty to find them in Europe...


Now, the worst part of it.... in my amp, they fry/mulfunction/die/whatever and i don't know why
In the final checkup after the amp finished i noticed one of them not working and replaced it. Right now i have both not working
The input voltage, 315v, is lower than the maximum in it's specs...


What can cause this?

Rui
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Old 10th May 2012, 11:27 AM   #14
stajo is offline stajo  Sweden
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Originally Posted by RuiR View Post
Thank you all.

I have to say i already built the amp and used DN2540 instead of the IXCP10M45S because of difficulty to find them in Europe...


Now, the worst part of it.... in my amp, they fry/mulfunction/die/whatever and i don't know why
In the final checkup after the amp finished i noticed one of them not working and replaced it. Right now i have both not working
The input voltage, 315v, is lower than the maximum in it's specs...


What can cause this?

Rui
Ive heared they are very sensitive to electrostatic voltage, if that can be the case.

Staffan
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Old 11th May 2012, 01:28 PM   #15
RuiR is offline RuiR  Portugal
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Originally Posted by stajo View Post
Ive heared they are very sensitive to electrostatic voltage, if that can be the case.

Staffan
Hi.

I don't have the anti-static paraphernalia. I found a sale in the popular auction site, ordered 2 IXCP10M45S and will mount them as in the original project.

I will have extra care with static, thanks Staffan.

Rui
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Old 11th May 2012, 02:13 PM   #16
SY is offline SY  United States
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Quote:
Originally Posted by RuiR View Post
Thank you all.

I have to say i already built the amp and used DN2540 instead of the IXCP10M45S because of difficulty to find them in Europe...


Now, the worst part of it.... in my amp, they fry/mulfunction/die/whatever and i don't know why
In the final checkup after the amp finished i noticed one of them not working and replaced it. Right now i have both not working
The input voltage, 315v, is lower than the maximum in it's specs...


What can cause this?

Rui
Never have had one die from static. But in some circuits, I've seen them die from transient oscillation and start-up/shut-down issues, whereas other MOSFETs survive just fine.
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Old 12th May 2012, 09:20 AM   #17
RuiR is offline RuiR  Portugal
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Originally Posted by SY View Post
Never have had one die from static. But in some circuits, I've seen them die from transient oscillation and start-up/shut-down issues, whereas other MOSFETs survive just fine.
Thanks SY

Hope you are right as i would solve it with the 10M45S Nevertheless i will have carefull handling them

A good weekend to you all

Rui
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