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Author Topic: Simple SiC TX  (Read 924 times)

Online OgreVorbis

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Re: Simple SiC TX
« Reply #15 on: June 14, 2019, 0028 UTC »

Sometime in the future a new PA layout is in order...2 RF fets for 1.5KW, 4 for 2.5KW...carrier that is.  5KW in 5 rack units, for the power modules anyway....wow.

+-RH

What FETs are you talking about? What frequency? That's an insane amount of power. Is this some design you are currently working on?

Offline redhat

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Re: Simple SiC TX
« Reply #16 on: June 14, 2019, 0715 UTC »
Same ones I'm currently using, C2M0080120D's and C2M0045170D's.  Of course its all theory until you build one... 

A big part of the problem in getting above 1KW is the thermal management.  Large bonded fin heatsinks and fan capacities over 200CFM become mandatory, especially for gear meant to survive operation in outdoor summer conditions.

It will be quite the feat when it is running.

+-RH
Somewhere under the stars...
WinRadio Excalibur/305 w/ a chi-town resonant loop, Kenwood KDC-U356 for mobile listening.
Please send QSL's and reception reports to xfmshortwave [at] gmail [d0t] com

Online OgreVorbis

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Re: Simple SiC TX
« Reply #17 on: June 15, 2019, 0524 UTC »
Same ones I'm currently using, C2M0080120D's and C2M0045170D's.  Of course its all theory until you build one... 

A big part of the problem in getting above 1KW is the thermal management.  Large bonded fin heatsinks and fan capacities over 200CFM become mandatory, especially for gear meant to survive operation in outdoor summer conditions.

It will be quite the feat when it is running.

+-RH

https://www.fischerelektronik.de/web_fischer/en_US/K%C3%BChlk%C3%B6rper/D/L%C3%BCfteraggregate/index.xhtml

These are a bit pricey, but it's a good company and they have everything.

Offline redhat

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Re: Simple SiC TX
« Reply #18 on: June 15, 2019, 2106 UTC »
I found a local company that does custom bonded fin stuff for reasonable prices.  I'll see how that works out.

+-RH
Somewhere under the stars...
WinRadio Excalibur/305 w/ a chi-town resonant loop, Kenwood KDC-U356 for mobile listening.
Please send QSL's and reception reports to xfmshortwave [at] gmail [d0t] com

Online Josh

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Re: Simple SiC TX
« Reply #19 on: June 15, 2019, 2137 UTC »
No pelts or is that too much current?
Conveniently located near Vincennes Indiana.

Offline redhat

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Re: Simple SiC TX
« Reply #20 on: June 16, 2019, 0524 UTC »
You mean peltier junction modules?  I haven't looked into it, but I would guess too much power consumption for the drop in temperature you get.

+-RH
Somewhere under the stars...
WinRadio Excalibur/305 w/ a chi-town resonant loop, Kenwood KDC-U356 for mobile listening.
Please send QSL's and reception reports to xfmshortwave [at] gmail [d0t] com

Online Josh

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Re: Simple SiC TX
« Reply #21 on: June 16, 2019, 1808 UTC »
Shame there isn't something that can absorb all that heat and turn it to lectricity.
Conveniently located near Vincennes Indiana.

Offline ChrisSmolinski

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Re: Simple SiC TX
« Reply #22 on: June 16, 2019, 1849 UTC »
Shame there isn't something that can absorb all that heat and turn it to lectricity.

Curse you, Laws of Thermodynamics!
Chris Smolinski
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eQSLs appreciated! csmolinski@blackcatsystems.com
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Offline JimIO

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