Yes, i remember the 2017 design. The earlier one, the 8877 amp with Watts
Unlimited power supply, is likely not available anymore since Tim Hulick is SK.
John
K5PRO
On Feb 29, 2024, 3:39 PM, at 3:39 PM, Joe <nss@mwt.net> wrote:
>Nope the one I remember is Jan of 2017
>
>Joe WB9SBD
>.
>
>A Contest 40 Years in The Making!
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>On 2/29/2024 4:07 PM, Paul Decker wrote:
>> John,
>> Is this what you are thinking of?
>>
>> https://www.arrl.org/files/file/Technology/6Mhanson8877.pdf
>>
>> Paul.
>> KG7HF
>>
>>
>>> Message: 1
>>> Date: Thu, 29 Feb 2024 11:00:56 -0700
>>> From:"jtml@losalamos.com" <jtml@losalamos.com>
>>> To:amps@contesting.com
>>> Subject: [Amps] High Voltage Switching Supply
>>> Message-ID:<081961a2-8f35-4c0d-8651-18f0560c6cca@losalamos.com>
>>> Content-Type: text/plain; charset=UTF-8
>>>
>>> I thought there was.a design on QEX at one time. But maybe it was
>QST?
>>> There are some consumer microwaves that use AC/DC converters in
>switchmode.
>>>
>>> We have commercial 10 kW Glassman switchers at work that put out
>1500 VDC at 6 Amps but they are not cheap. They power screen grid on
>TH628L RF tube.
>>>
>>> John
>>> K5PRO
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