[Amps] HV wires, back-to-back diodes, and B- wiring

[Jeff Blaine]

Rob,

I was thinking the same thing as you.  A guy can spend a mountain of cash on 
interconnects for hv and still get fried.  A stand alone supply by 
definition means kicking the danger awareness up a notch.

Separately, I did hear once of a guy who used two separate cables.  Each 
cable had a lead that ran to a cutout relay in the PS.  If the cable was 
unplugged, the relay would kill power to the supply (also prevent it's 
engagement).  That idea made sense to me.

73/jeff/ac0c
www.ac0c.com


--------------------------------------------------
From: "Rob Atkinson" <ranchorobbo at gmail.com>
Sent: Saturday, September 11, 2010 9:12 PM
To: <amps at contesting.com>
Subject: Re: [Amps] HV wires, back-to-back diodes, and B- wiring

> Not to be flip about this but if we're talking about the safest
> design, that is in my opinion, to forget about B+ cables and separate
> cabinets and build the whole thing, p.s. and RF deck, into a single
> rack on wheels.  Pick up a little 4 or 5 foot high Cabtron rack at a
> hamfest and put the whole thing on the floor next to the operating
> desk or table.   My reason for mentioning this is sometimes builders
> focus on two cabinets and interconnecting cables and forget about or
> don't realize the rack option.
>
> 73
>
> Rob
> K5UJ
>
> <<The safest design uses a deeply recessed panel mount connector on the
> PS and a "flying lead" from the amp, i.e. a wire which is hard-wired
> into the amp without a connector at the amp end. As long as there is a
> good solid ground wire from the amp chassis to the PS chassis, that
> arrangement is as close to  fool-proof as you can get. Someone can hot
> plug it all day long with no danger.>>
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