[Amps] 4CX1000A project

[Vic K2VCO]

I know. One thing I've done is included two ground conductors in the control cable that 
goes to the amplifier. So if someone were to disconnect the HV cable while the supply was 
energized, it would still be grounded (the supply can't turn on if the control cable is 
disconnected). I agree about the exposed pin.

I thought a lot about using a separate power supply. I would much have preferred a single 
unit, but it would have been too big and heavy for a tabletop and I don't have room for a 
floor-standing unit.

On 10/27/2013 8:20 PM, Al Kozakiewicz wrote:
> Just FYI, from Wikipedia:
>
> MHV connectors are presently considered by some as a safety hazard because of the
> possibility of high voltage on the exposed central pin when not plugged in,[1] and
> because the ground connection is broken before the power connection when demating. SHV
> connectors are designed to prevent these hazards, and cannot be mated to BNC
> connectors.
>
> Always have liked the idea of separate power supplies but have always worried about the
> safety of interconnects.  The one other person I know who did this did not use any
> connectors for the HV.  Accomplished the goal decoupling the supply from the amp, but
> requires tools and time to move either chassis more than the length of the umbilical
> away from each other.
>
> Al AB2ZY
>
> -----Original Message----- From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of
> Vic K2VCO Sent: Sunday, October 27, 2013 11:03 PM To: Amps reflector Subject: [Amps]
> 4CX1000A project
>
> I've added a few more photos to my 4CX1000A amplifier page at
> <http://www.qsl.net/k2vco/4CX1000A/K2VCO%204CX1000A%20Amplifier.html>
>
> I finished the wiring as well as testing and adjusting the Tetrode Boards, which
> include the screen and bias regulators and trip circuits, the warmup timer, etc. I have
> not yet applied HV, which I intend to do when I'm fresh, and after I've cooked the tube
> with heater voltage only for a while.
>
> I'm working on adding fans to a '1000 watt' Drake dummy load to use for testing.
>
> -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/

-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/