OK, that was quick. Opened the box, all parts appeared to be in good shape,
but no documentation of any kind. If I could prevail on the other builders
for a copy of the instructions/schematics, it would speed up my build.
Thanks;
-Bill-
On Friday, May 21, 2021 at 6:23:56 PM UTC-7 Bill
Toss another kit on the barbie
My kit arrived today so I will be building it over the weekend. Watching
the comments closely.
-Bill-
On Friday, May 21, 2021 at 5:14:24 PM UTC-7 gregebert wrote:
> I have an Aneng UT61e; cheap but quite good. One of my scopes has a pair
> of 100x probes
I have an Aneng UT61e; cheap but quite good. One of my scopes has a pair of
100x probes that lets me look at a few kV, but I was too lazy to bring it
up today. If I run into problems I'll post some screenshots.
After installing the diff-amp transistors and Q1, current-drain increased
to 360mA.
Paying full attention - what model DMM do you have if you can't directly
connect it? I have an 87V I'm happy to connect as it's rated for 1KV.
On Friday, May 21, 2021 at 11:38:27 PM UTC+1 gregebert wrote:
> UPDATE 1: I built the power supply/driver board and completed some basic
> testing. I
UPDATE 1: I built the power supply/driver board and completed some basic
testing. I installed all components EXCEPT the transistors for the diff-amp
that drives the CRT. The standby current at 12V is zero. The HV supply can
be enabled by grounding the POWER_ON signal; that causes the inverter
That link is to YOUR purchase which we can’t see since we are not logged into
your account.
But, I reversed searched….
https://www.ebay.com/itm/313531778165
Nice price you got there. Sniping in the last 7 seconds. Must be using
auctionsentry.
Michail Wilson
206-920-6312
From:
I guess my phone has the same 12am error then, im pretty sure that 12am is
correct as stupid as it is.
On Fri, May 21, 2021, 4:58 PM Jeff Walton wrote:
> I designed a nixie about 50 years ago that used all 74xx logic and a few
> discrete transistors. It was wired point-to-point to the IC’s (no
Also can you send and receive to the forum not in desktop mode? It seems I
can't create or respond to threads in mobile browser mode?
Bill
On Friday, May 21, 2021 at 3:13:01 PM UTC-7 Bill Notfaded wrote:
> Scored a replacement tube for my Bad-Nixie B-8971 clock!
>
>
Scored a replacement tube for my Bad-Nixie B-8971 clock!
https://www.ebay.com/vod/FetchOrderDetails?ViewPaymentStatus=02-0709-848942
Not so common whew!
Bill
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I designed a nixie about 50 years ago that used all 74xx logic and a few
discrete transistors. It was wired point-to-point to the IC’s (no sockets) and
it ran for 35+ years. The only logic mistake that I made was that I did the
AM/PM indicator and was all proud of it and someone pointed out
I always wanted to design a nixie clock that uses just 74xx ICs. I know
that there are some schematics available but just copying a design is not
fun.
Recently, I watched a video from CouriousMarc with an intro to a digital
logic circuit simulation software called logisim-evolution. I think
Richard,
A single push-pull HV driver chip will not be able to drive a multiplexed
display.
The reason is that it only connects each tube element to either 0V or 180V.
It is not capable of leaving an element disconnected.
On Thu, May 20, 2021, 8:45 PM Richard Scales
wrote:
> Sorry, I mean
I built Mr. Forbes clock and it is still working!
~
*mcvei...@gmail.com *
On Thu, May 20, 2021 at 9:45 PM Paul Andrews wrote:
> It might work if you use two for the anodes with Vpp set to 170V, and one
> for the cathodes with Vpp set to 75V.
>
> The need to force things to a specific
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