>You can buy what is called "anode lead" form the electronic supply houses,
>especially ones selling to TV
>repair. This is rated at 40 kV+ and is 18 gauge wire. Where any wire will
>go through the chassis
>internally, use ceramic (steatite) feedthru insulators. These work better
>than gromets for insulation.
>You would be better using "Amp" brand circular connectors for the cable
>where they are insulated. If you
>want to run the high voltage lead seperate, James Millen make a special
>high voltage connector for this.
? if the Millen HV connector is still made from molded phenolic, there
could be a problem since phenolic resin absorbs water vapour from the
air, and thereby becomes conductive.
>
>I would really make up my own cable by combining all my wires and using a
>long piece of heat shrink to
>for the cable jacket with the amp connectors on each end. A fan can
>increase the life of the transformer
>a good bit also.
>
>Best & 73's
>
>Will Matney
>US Amplifier
>
>Subject: [Amps] Power supply design considerations
>
>> I am still working on the 4-1000A amplifier design and have decided to
>> separate the PS from the RF chassis. I still don't have my HV
>> transformer but I am thinking that it will be too big to get into my
>> presently designed cabinet of 14" x 14" x 12" dimensions along with the
>> 4-1000A and all the plate tuning circuitry and filiment transformer.
>>
>> I will be putting the power supply under the bench in a built in (wood)
>> cabinet that is already there. The PS chassis/cabinet itself will be
>> made of aluminum but it will set on a shelf inside a closed door so I am
>> wondering about wheather I will have to wory about heat build up? It
>> will be solid state diodes, capacitors and transformer. Do I need to put
>> in a fan in the side of the cabinet?
>>
>> The second item I am asking for design help on is the power cable to the
>> RF chassis. This will run about 6 feet from the under desk cabinet to
>> the top of the desk through a hole in the bench. It will be near my
>> knees so I dont want it to arc (5 Kv) to any part of my body.....#8-)
>> What should I use for transmission cable? What is a source for such
>cable?
>
>
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