Paul Decker wrote:
>
>
> Here are some pictures of the work in progress. It's not so pretty, but so
> far, everything inside is working. There is still lots to do though.
>
>
Once upon a time, or in another time (Pre Retirement) when I was
gainfully employed, we'd design it, build it, get it to work, then
rebuild it to make it look good, and then start over on getting it to
work without all the new bugs making it look pretty put in. <:-))
73
Roger (K8RI)
>
> The underside, still quite a bit to do here with the input circuit.
>
> http ://home.comcast.net/~kg7hf/6m_3cx800a7_amp/build%20pictures/PIC_0247.
> JPG
>
>
>
>
>
> This is the control and metering section, I'm using a WS7D triode control
> board. This section is almost done, you can see the filament transformer,
> monitor LED's , and control board. There is also another low voltage
> transformer and rectifier for the switch mode supply. Those large caps are
> 3900 uF @ 400V caps which are fed by a 1000v piv 35A bridge rectifier to
> produce the DC for the switcher. Also, step start and HV (well medium
> voltage) relays are installed..
>
> http ://home.comcast.net/~kg7hf/6m_3cx800a7_amp/build%20pictures/PIC_0250.
> JPG
>
>
>
> This picture is an overall picture but shows the RF deck and tubes as well as
> the blower. The guts of the HV switcher will go to the right (under in this
> pic since the amp is on it's side) of the blower. The transformer next to
> the blower allows 220 v operation since the blower is only 115 and I didn't
> want to run another wire to support both 110 and 220 in the cabinet...and
> yes, I did figure out later I don't need that transformer that I could get
> 110 from the center tap of a 220 input. Live and learn!
>
> http ://home.comcast.net/~kg7hf/6m_3cx800a7_amp/build%20pictures/PIC_0254.
> JPG
>
>
>
>
>
> So, HV and RF deck next.
>
>
>
> Thanks for all the help, I've got at least a few more questions to ask before
> it's all over!
>
>
>
>
>
> Paul (KG7HF)
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>
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