[Elecraft] KPA500

[Phil Townsend]

New 1700 volt sic jfet

http://www.semisouth.com/news/press_releases/2010-04-30_New_1700V_and_1200V_SiC_JFETs.html

Sent from my iPad

On Sep 10, 2010, at 7:12 AM, Phil Townsend <philji at me.com> wrote:

> A company called Semi South builds some very serious solid state devices that can swing 30 amps @ 1200 volts!
> They make them do electric car controls. Plus very very low distortion so low almost unmeasurable. I tried them in an audio application and was blown away.
> Can't remember the part number but their web site has details.
> 
> Follow my tweets:
> PhilTownsend
> 
> Build your own gear
> Grow your own food
> 
> 
> 
> 
> On Sep 10, 2010, at 4:42 AM, István Szabó <ha4zd at t-online.hu> wrote:
> 
>> On 9/10/2010 6:10 AM, Phil Townsend wrote:
>>> So I got me a ten watt k3... I like it... It is very good. It works. And I'm thinking of a KPA500.
>>> But to run the KPA500 I gotta get the 100 watt add-on first. Hummmm.... Is that a deal breaker? Might be. If I don't get the hundred water then I can't get fully output.!.?&-¥xxx
>>> So the true cost of the kPA500 is way more... For me with just ten watts. I really only want ten watts. But when I feel the need, the need for speed (yeah I had to say it) I would like to hit the big lever marked kill and blast them out of their socks.
>>> 
>>> "Can't hear me OM??
>>> He switches the amp to kill....
>>> How's ur copy now om?
>>> 
>>> The screenplay is in my head...
>>> Among other things.
>>> 
>>> I would like to be able to upgrade with out the interim 100 watter.
>>> Yeah, I know, i won't work but I can ask those guys who sweat solder and cash flow and you never know they just might be able to do it.
>>> To me the K2 was a total mind melt...and the K3 is beyond my wildest dreams. Quite an upgrade from the old Heathkits I used to build... No disrespect meant the hotwaters and Indians that may be still lurking.
>>> 
>>> Phil
>>> Santa Fe
>>> 
>>> 
>>> Build your own gear
>>> Grow your own food.
>>> 
>>> 
>>> 
>>> Sent from my iPad
>>> 
>>> On Sep 9, 2010, at 9:30 PM, Greg<n4cc at cableone.net>  wrote:
>>> 
>>>> Free market feedback...bring back the 1500 watt amp!  73 de Greg-N4CC
>>>> 
>>>> -----Original Message-----
>>>> From: elecraft-bounces at mailman.qth.net
>>>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Doug Person
>>>> Sent: Thursday, September 09, 2010 8:58 PM
>>>> To: elecraft at mailman.qth.net
>>>> Subject: Re: [Elecraft] KPA500
>>>> 
>>>> It's never as simple as that.  I think announcing a product when its on
>>>> its final approach is fine.  I think getting tons of feedback on what you're
>>>> about to invest heavily in is good business.  Maybe the truth of the earlier
>>>> amps was that there just wasn't enough positive response to them.  Maybe
>>>> this time they used all the input from the previous attempt to refine the
>>>> price point and feature set.  Maybe everytime someone here says the price is
>>>> too high Eric makes another note. Or someone else says I'll order on the
>>>> first day - is another note. This is free market research.  Easy access to
>>>> the most likely buyers.  A big product mistake by a small company like
>>>> Elecraft could sink them.  I think they took a LOT of notes on the road to
>>>> completing the K3. Nobody can argue with the results. And when the KPA-500
>>>> is released, it will be based on tons of feedback.
>>>> 
>>>> Doug -- K0DXV
>>>> 
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>> Four MOSFETs can be driven out with ten watts id these are MRF150s (or 
>> VRF). You probably need to modify the input circuit. For EB104 needs 
>> only 6 watts.
>> 
>> -- 
>> István Szabó
>> 
>> Success is the ability to go from failure to failure without losing your enthusiasm. - Winston Churchill (1874 - 1965)
>> 
>> ______________________________________________________________
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