There is one MK5017 clock that uses PNP transistors in the book I scanned
which you can download from here:
https://groups.google.com/g/neonixie-l/c/Ov-mzZ_pDig/m/G95NMJPKBQAJ it
doesn't seem to use SP352s but at least a Panaplex display.
/Martin
On Monday, 18 January 2021 at 04:59:28 UTC+1
Yes, thank you I have seen it. I am currently trying to make a schematic
of the power supply that is on the clock that I have. I have no voltages
higher than about 125 ish in the clock. The 15Volt for the chip is derived
from a zener on a 55 Volt line. Also Heath uses NPN transistors , and
Mine will be delivered in the next few days.
Anyone else order it?
On Thursday, December 31, 2020 at 1:06:49 AM UTC+1 Yohan Park wrote:
> Thanks for posting the link to the manual
>
> On Wednesday, December 30, 2020 at 8:11:46 PM UTC+1 dixter wrote:
>
>> incase you can't see the manual...
http://www.decadecounter.com/vta/pdf/gc1092d_schematic.pdf
On Sunday, January 17, 2021 at 11:35:14 PM UTC+1 N9KTW wrote:
> Well I found another clock to work on, using SP352 displays It is
> marked DIGITAL CONCEPTS CORP, EC102 electronic calendar clock.
>
> It uses 3 SP352's for a 6
did you see this?
http://www.decadecounter.com/vta/pdf/gc1092d_schematic.pdf
On Sunday, January 17, 2021 at 3:35:14 PM UTC-7 N9KTW wrote:
> Well I found another clock to work on, using SP352 displays It is
> marked DIGITAL CONCEPTS CORP, EC102 electronic calendar clock.
>
> It uses 3
Hi
This is interesting (no my listing)
https://www.ebay.com/itm/Transparent-sockets-for-Nixie-Tube-IN-14-6pcs-/224200856337?_trksid=p2349624.m46890.l49292
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Well I found another clock to work on, using SP352 displays It is
marked DIGITAL CONCEPTS CORP, EC102 electronic calendar clock.
It uses 3 SP352's for a 6 digit display. A MOSTEK 5017BA chip to run
things.
The display doesnt light up, at all. In attempting to check voltages, I
cannot
Hi Ryan ,
Still searching for some LL-555 , I managed to found only one piece
locally ..
I sent messages/inquiries to almost all all #bay users , including the one
from Poland mentioned (he is sales on #bay also ), he is a very nice guy
but he doesn't have anymore of this part
If you will
Oh by the way.
You will need three 555 tubes and one 557 just to spell your first name.
Your last name starts with a B so that's a 555 but no idea what other
letters you need.
But you'll probably need 556 and/or 557 for that as well.
On Sunday, January 17, 2021 at 10:20:34 PM UTC+1 Yohan Park
Oh nevermind
I just translated the page and they're out of stock :(
On Sunday, January 17, 2021 at 10:16:39 PM UTC+1 Yohan Park wrote:
> Try if this company in Poland replies to an email in English.
> Or perhaps try and find someone from Poland here in the group.
>
Try if this company in Poland replies to an email in English.
Or perhaps try and find someone from Poland here in the group.
https://archiwum.allegro.pl/oferta/lampa-nixie-ll-555-nos-i7175269093.html
On Sunday, January 17, 2021 at 8:02:30 PM UTC+1 Ryan B wrote:
> Hi everyone,
>
> I know someone
Hi everyone,
I know someone asked this recently, but I don't know what the outcome was.
I'm looking for eight (even seven) working LL-555 tubes. I'm trying to
build a display that spells out my name.
Any help would be appreciated!
Ryan
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There are a number of on-line calculators to determine capacitor reactance, for
example:
http://www.sengpielaudio.com/calculator-RC.htm
Also, if you do use a capacitor make sure you use a class “Y” capacitor; they
are designed for use in an AC line. Anything else is a danger and / or fire
Adding a bit more...
Capacitive reactance (its "resistance") Xc = 1 / (2 * Pi * F * C)
So swap round Xc and C to be able to work out the capacitance required
for a required resistance. For me in f = 50Hz land, Xc = 10k gives
1 / (2 * pi * 50 * 1) = 0.0032 = 0.32 uF - so I would start
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