Re: 19K6400

On Thu, 22 Jan 1998 19:57:46, fishd <fishd@tiac.net> wrote:

>At 04:29 PM 1/22/98 -0700, Anders wrote:
>>On Thu, 22 Jan 1998, fishd wrote:
>>
>
>>
>>Yea. Taking new Photos would just make a cooler manual. I am not sure you
>>need a macro lens though. Some of the pictures are close up, but not very
>>close.
>>
>
>About 6" to 1 foot away would make for some useful photos. I'll see
>what I can do.
>
>>>
>>> I still want to try modifying a 6100 into a 6400, the component differences
>>> are listed in my 6400 write-up, I just don't have a spare 6100 to
>>> experiment on.
>>
>>When you say "modyfying", how drastic were you thinking? Since the
>>operating voltage is different, you would need a new power isolation
>>transformer. Plus the HV PCB is quite different since it only runs on
>>positive.
>
>It's been about a year since I last looked at the schematics but I
>seem to remember the only difference in the Hi-V supply was that
>one of the electrolytics was replaced with a short (C902?) and the
>GND was now hooked up to the former -Vs input. I just pulled the schematic
>out and checked. Yup, simple. The other changes are cap voltages.

If I recall correctly there's is one more very critical change and that's the
removal of a 24v zener diode, and the associated changes. These changes keep
the 180v output at the correct value.

-Zonn

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Received on Thu Jan 22 16:20:21 1998