[Amps] 4CX1000A project

[Dave Trainor]

Vic, love the construction, can you tell me who's blower that is?  All the
ones I have found so far are much thicker, the under chassis mounting is
excellent.

73 - Dave, N8ZFM




On 10/28/13 10:15 AM, "Vic K2VCO" <k2vco.vic at gmail.com> wrote:

>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/
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