Re: [neonixie-l] HV control chips

[gregebert]

Based on the time-delays, the scope trace is showing 2 different signals at 
the level-shifter, not input & output of the same bit.
Double-check the control bits; it's very easy to make a mistake with POL, 
BL, and LE.

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Re: [neonixie-l] HV control chips

[Paul Andrews]

I'll check all the connections again. It is very weird. 

I'll check the all on thing too, though I have another chip I can put in. Some 
known working Arduino code would be great Jonathan. 

And yes. This scope writes to 3.5" floppies. It was a bargain though - it was 
free - and is much better than my teeny digital scope. Way easier to operate!

> On May 15, 2017, at 5:43 PM, SWISSNIXIE - Jonathan F.  
> wrote:
> 
> Could you test "All on/All off" which does not need any data or clock? See 
> 3rd page of the datasheet. This should always work, otherwhise the chip might 
> be defective.
> 
> If you want, i can provide an arduino code that should work with this chip. I 
> use the hv5122 and 5 which operate quite the same. You would only have to 
> take care with the POL pin. But that should be easy.
> 
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Re: [neonixie-l] HV control chips

[SWISSNIXIE - Jonathan F.]

Could you test "All on/All off" which does not need any data or clock? See 3rd 
page of the datasheet. This should always work, otherwhise the chip might be 
defective.

If you want, i can provide an arduino code that should work with this chip. I 
use the hv5122 and 5 which operate quite the same. You would only have to 
take care with the POL pin. But that should be easy.

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Re: [neonixie-l] HV control chips

['Terry S' via neonixie-l]

Some of the early scopes only wrote to floppy


On Monday, May 15, 2017 at 3:41:23 PM UTC-5, jrehwin wrote:
>
> I'm not sure what's going on there, looks like maybe a shared ground isn't 
> connected right?  I hope your HV5522 isn't messed up somehow.
>
> That's a digital scope, you should be able to get a screen dump out of it. 
>  I do that with mine:
>
> http://www.vitriol.com/images/tech/scope102.png
>
> - John
>
>

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Re: [neonixie-l] HV control chips

[John Rehwinkel]

I'm not sure what's going on there, looks like maybe a shared ground isn't 
connected right?  I hope your HV5522 isn't messed up somehow.

That's a digital scope, you should be able to get a screen dump out of it.  I 
do that with mine:

http://www.vitriol.com/images/tech/scope102.png 


- John

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[neonixie-l] HV control chips

[Paul Andrews]

Hi,

I was following up on a discussion elsewhere which mention the HV5530 as a 
control chip for Nixie tubes. This has 32 outputs and 12V digital control, so 
it has some drawbacks. There are many other similar chips, in particular the 
HV3418, which has 64 outputs at 180V and 5mA, with 5V digital inputs. So, at 
least from that perspective, it looks like a very good match for driving 6 
nixies.

I don't know enough to understand the rest of the data sheets for these 
devices, so I don't know how to determine their suitability for driving nixies. 
Can anyone help?

Thanks

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