[Amps] Switch-mode HV power supply

[jeff millar]

Oleg...

Can you provide a URL?  Google could not find the site you mention.

jeff, wa1hco

Oleg Skydan wrote:

>Hi, All !
>
>  
>
>>The reason for this inquiry is that I'm preparing a talk on power amps 
>>for the GM DX Convention. They have asked me to include some comments 
>>about "tubes v transistors" with a focus on DXing, contesting and 
>>DXpeditions. Comparing cost, size, weight and reliability for the two 
>>different technologies, an interesting question pops up: are our 
>>existing tube amps as small and lightweight as they could be?
>>
>>    
>>
>
>Check the DL2KQ web site. There is a lot of info about the compact
>power amplifiers with transformerless power supply. He uses a 220-240V
>mains with 4x rectifier-multiplier. The isolation is achived by using HF 
>transformer at the PA's input and capacitors (3000 pF) at the output.
>
>Many hams use such constructions in the former USSR and they are
>very satisfied.
>
>All the best !
>Oleg Skydan
>UR3IQO
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>
>  
>