meanwell makes switchers that can stack to 9KW @ 48V
On Fri, Aug 12, 2011 at 11:34 PM, MIKE DURKIN <patriot121@msn.com> wrote:
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> So how much already ??
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> ... i just found a power supply that delivers 50V @ 60A .....
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> Mike KC7NOA
>
>> Date: Sat, 23 Jul 2011 16:04:49 -0400
>> From: jeff@wa1hco.net
>> To: garyk9gs@wi.rr.com; Amps@contesting.com
>> Subject: Re: [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible"
>>
>> Gary...
>>
>> Some YouTube videos...
>> http://www.youtube.com/watch?v=02v58cnb41o&feature=relmfu
>> http://www.youtube.com/watch?v=-EACUpIhpac
>>
>> F1JRD also has an article in Dubus
>> http://www.qsl.net/f1jrd/MRFE6VP61K25H.html
>> http://www.w6pql.com/1_kw_2m_ldmos_amplifier.htm
>>
>> jeff, wa1hco
>>
>>
>>
>> On 07/23/2011 12:24 PM, Gary K9GS wrote:
>> > Hello Jeff,
>> >
>> > Any pictures available of the copper heat spreader, aluminum plate, etc??
>> >
>> > On 7/23/2011 10:34 AM, jeff millar wrote:
>> >> This email describes what I've learned from looking at these modern
>> >> transistors
>> >> for the last few months. It seems to me like a fundamental crossover
>> >> point has
>> >> been reached. Silicon processing technology has produced rugged VHF/UHF
>> >> transistors, with reasonable impedance matching for a reasonable cost,
>> >> especially considering all the other costs associated with an amplifier.
>> >> These
>> >> parts will only get better and cheaper as time goes on.
>> >>
>> >> Brian, WA1ZMS, brought a dual MRFE6VP61 on 2 meters (2 x 1250W) to the
>> >> last VHF
>> >> contest. The parts are $271 each at Digikey...
>>
>>
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>
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