[Amps] switching power supply for tube amplifier

[Roger]

>I don't believe in transistors, they are so easy to fry.
> having tube you see that it gets orange, you say oops, turn the amp off, 
> fix

My finals are External anode (ceramic/metal) If they start to glow I'm in 
expensive and deep "doggie do"<:-))

> the problem (or even replace some $20-50 tube) and continue...
> in case of solid state - you have no time to say oops and there is nothing
> to get orange :)

Today you can get a pair of transistors that will conservatively run the 
legal limit out with about 100 volts on them. With the proper protection 
circuitry they stand up quite well.

73

Roger (K8RI)

>
> 2007/9/14, Steve Thompson <g8gsq at eltac.co.uk>:
>>
>> Steve Thompson wrote:
>> > Alex Malyava wrote:
>> >> Hi,
>> >>
>> >> After reading discussions of "light and powerful PA for expeditions" 
>> >> at
>> >> Russian website (cqham.ru) I got this crazy idea of using switching
>> power
>> >> supply in it.
>> Another thought - buy a relatively cheap 28 or 48V switching
>> supply second hand, and put your effort into building a solid
>> state amp to go with it.
>>
>> Steve
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