FQA11N90C

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FQA11N90C

Postby Gilly » Wed Jul 20, 2011 5:42 am

Hi steve


I have some C's in my stock....
What rating would you expect from these..... :?:
The FQA11N90 cruise at 50Watts / 150% ......appox

In Australia our power levels are far down from yours.....

Thanks


Wayne
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Re: FQA11N90C

Postby kf1z » Thu Jul 21, 2011 7:41 am

A little less Wayne.

I'd only ask 40 watts out of them...

They are what I used for my first transmitter.

They are actually right about on par with FQA10N80
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Re: FQA11N90C

Postby Gilly » Fri Jul 22, 2011 7:51 pm

Thanks Bruce...

I probably wouldn't have noticed any difference between them and the 11N90's....

I normally use 4 FETs to develop 120Watts and even with the 11n90C they would loathing really...



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Re: FQA11N90C

Postby Diego-CX4DI » Fri Aug 12, 2011 9:29 am

IRFP450/ IRFP350/ 2SK1518/ 2SK1170 develop 120W output very stable with 45Vdc.

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Re: FQA11N90C

Postby steve_qix » Tue Sep 20, 2011 5:35 pm

Diego-CX4DI wrote:IRFP450/ IRFP350/ 2SK1518/ 2SK1170 develop 120W output very stable with 45Vdc.

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Diego
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They might "work", but you will have very little headroom with something like an IRFP450. I'd only run about 25 volts at carrier, 75 volts total power supply voltage :?
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Re: FQA11N90C

Postby G4ZOW » Wed Oct 12, 2011 8:52 am

Steve,

I have several 50V power supplies which I'd like to use.

Are there any other devices other than those listed above but with even higher output capabilities as I'm looking to minimise the number of output devices to run full legal?

Thanks.

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Re: FQA11N90C

Postby Diego-CX4DI » Tue Nov 08, 2011 9:13 am

what is your full legal power?

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Re: FQA11N90C

Postby G4ZOW » Sat Nov 12, 2011 5:58 pm

Hi Diego,

400W here but I will be travelling next year and will be allowed 1500W.

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Re: FQA11N90C

Postby Diego-CX4DI » Mon Nov 28, 2011 7:56 am

Hi David,

If you have a 75Vdc power supply you must considere to use a IRFP250 in the RF stage, I was tested one of it in 40M at 30Vdc and 4A, 120Wdc, 110W output(analog driving).


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