8 Mar
2020
8 Mar
'20
12:18 p.m.
Adrian
Congrats on your panel! It is very impressive!
On the Russian resistors I saw, the value was what is written on it. If you can?t measure
them, maybe there is some conformal coating or corrosion on the leads? You?d need to
scratch that off.
For the lamps, it might be time to invest in a variable power supply. Usually I start low
(3V) and go up from there. The IBM ones are meant to be under-voltaged - at their voltage
rating they are not glowing very bright.
Marc
On Mar 8, 2020, at 7:38 AM, Adrian Stoness via cctalk
<cctalk at classiccmp.org> wrote:
?not seeing anything els other then the 620
hard to get any decent shots of them with out a macro lens though
as for the lamps if i wanted to test them one at a time would i just give
them 12V directly? or would it be lower dont have a variable power supply
atm just an old pc one
> On Sun, Mar 8, 2020 at 1:44 AM Holm Tiffe <holm at freibergnet.de> wrote:
>
> Adrian Stoness via cctalk wrote:
>
>> trying to identify these soviet resistors anyone familiar with how they
>> marked them i see 620 on these ones for the panel bulbs
>> https://www.flickr.com/photos/1ajs/49633358106/in/dateposted-public/
>>
>> want to test all the lamps with power but i dont know where to start with
>> testing.
>>
>> i see markings for 220V on the power feed plug
>> https://www.flickr.com/photos/1ajs/49621260392/in/dateposted-public/
>>
>> bulbs
>> https://www.flickr.com/photos/1ajs/49623473996/in/dateposted-public/
>> https://www.flickr.com/photos/1ajs/49623475146/in/dateposted-public/
>
> Not mutch to see on your pictures..better photos?
>
> The Lamps seems to be neon lampes and at 220V the only resitor volue
> that makes sense and has a 620 in it is 620K.
> The resistors could be labeled with 620k or witn M620.
>
> Regards,
>
> Holm
>
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