I get it now... that's what you meant by only having 120V here.
On Friday, October 16, 2020 at 2:17:04 PM UTC-7 Bill Notfaded wrote:
> Those are neat Paul. I wonder if they'd even light in a 120V AC socket?
> Seems to me it might not work right since these look like they work like
> IN-28?
Those are neat Paul. I wonder if they'd even light in a 120V AC socket?
Seems to me it might not work right since these look like they work like
IN-28? I have other neon tubes like this that do light but they're just
dimmer than in 240V.
Bill
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Thanks Paul and Martin-
Sounds like I need to rethink this. I ordered a sealed box of new IN-28
from Ukraine today. I'm sure I'll have some extras if anyone needs them.
I got them to replace any tubes in mine that don't look right or are bad.
I'll take some pictures of my boards and post.
Good information Martin. The board as described to me by Richard has the grid
resistor you mention, as does mine. Certainly, if someone is wiring up one of
these tubes directly - in this case as colons for example - they need to be
aware if this.
> On Oct 16, 2020, at 3:32 PM, Dekatron42
Be careful if you decide to switch the grid electrode to ground as you
might destroy the tube if you pass too much current through the grid
electrode. Normally you should not leave the cathode floating (unconnected)
while the anode is seeing full anode voltage and then connect the grid
I came across this old auction of Russian IGD7-KR tubes - basically IN-28
tubes packaged with an E27 socket so they can be used as regular light
bulbs. I'm curious if anyone has any - I don't want to get any, I only have
120V here.
On my boards the cathodes for each segment are wired together and presented
at the edge of the board. The grid is permanently connected to HV via a
large value resistor. So each segment is like a cathode in a regular nixie
tube - pull it to ground and it turns on, let it float and it turns off.
This guy Jerobeam Fenderson is a bad
@ss!!! https://www.youtube.com/user/jerobeamfenderson1
On Friday, October 16, 2020 at 6:17:04 AM UTC-7 Bill Notfaded wrote:
> Check this out... this is where it's at in oscilloscope art! Sound made
> specifically to make vector graphics on a scope. Bad
Check this out... this is where it's at in oscilloscope art! Sound made
specifically to make vector graphics on a scope. Bad
@SS! https://www.youtube.com/watch?v=ZaTuFB5QXHo
Bill
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Anyone have any PNP transistor recommendations? Seems like SOT-323 size
would be possibly ok if I could find some that can take enough voltage.
How high of voltage should I be thinking about for these? You have to bear
with me because I'm a CIS not an EE. For me the I2C parts make much
I found some of these power supplies now that put out 0-500VDC 0-2A with 4
sets of outputs. This seems perfect for a four or probably even 6 digit
clock if the tubes are driven PWM. The power supplies even have 1V
resolution. These power supplies have a fan in them so I'm interested to
see
I appreciate you attaching those - I'll hold out for a specific 8SJ31J
model to practice on.
On Thursday, 15 October 2020 at 13:17:19 UTC+1 Oscilloclock wrote:
> John, I happen to have the specs for the 8SJ40x and 8SJ42x (attaching page
> 1 of each), and comparing them there is a substantial
This is exactly correct Paul and I have both shown the 500V models we have
here. I bought a second 500V one. I like the fact that some have four
outputs too. These are used for genetic research.
Bill
On Thu, Oct 15, 2020, 1:20 AM Paolo Cravero wrote:
> Hi.
>
> The PS Paul and I have goes
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