>
>Thanks for reading this message.
>
> I am in the process of nutting out a HV supply for an old homebrew valve
>amplifier and have a couple of questions for the old hands.
>
>1. The amp uses 2 x TB 2.5-300, which are rated at 2.5 kV.
>The test bench version of the supply is a setup that uses microwave oven
>transformers charging a capacitor bank. It surges to 2.8 kV (under bleeder
>load only). Under 400 mA of load (the projected total plate current), the HV
>drops to 2.1 kV. Can I expect problems with the 2.8 kV at the start of a
>transmission or should I ignore the surge voltage?
>
>2. The HV supply will be an external, stand-alone unit. I am having problems
>locating suitably rated HV connectors. The HV connector would have to be a
>two pole type, making B- before making B+, and rated at >2.8 kVDC (to
>prevent the operator from being electrocuted)
>
>The ARRL handbook mentions Millen 37001 HV connectors. Are there any
>places that sell these (or other suitable connectors) mail order in small
>quantities? Are the Millens any good for what I want?
Millen "HV" connectors are made from a material which slowly absorbs
water from the atmosphere. Better to use real hv connectors. ......
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