Re: [neonixie-l] Useful tool on eBay...

[Paolo Cravero]

Two months have passed and I haven't yet gotten my hands on a laptop CFL
driver. Still, I would like to have a battery operated "wireless" Nixie
tester for flea markets like the Masonlite device. During my electronics
shopping wanderings these circuits came out:

5 V to 400 kV booster:
http://www.banggood.com/DC-3_6V-6V-To-400KV-Boost-Step-Up-Power-Module-High-Voltage-Generator-p-915426.html

and

3 V to 7 kV booster:
http://www.banggood.com/DC-3V-To-7KV-7000V-High-Voltage-Generator-Boost-Step-up-Power-Module-p-919913.html

Voltage of these modules seems higher than CCFL drivers, but the output
current much lower. Any clue either of them would work as a "wireless"
Nixie tube tester? Well, the second item is cheap enough to risk it doesn't
do anything, but then I do now want to damage my Nixie.

Thanks,
Paolo

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Re: [neonixie-l] Useful tool on eBay...

[Charles MacDonald]

On 15-11-08 01:23 PM, Paolo Cravero wrote:

Two months have passed and I haven't yet gotten my hands on a laptop CFL
driver. Still, I would like to have a battery operated "wireless" Nixie
tester for flea markets like the Masonlite device. During my electronics
shopping wanderings these circuits came out:


I recently got a unit simalar to this...

http://www.ebay.ca/itm/Portable-Handheld-Neon-Tube-Lamp-Fluorescent-LED-Tester-/281225125040?hash=item417a52dcb0:g:UP0AAOSwNSxVZqLf


Have not gotten beyond lighting up some NE-51 lamps that were still in 
their package  and giving myself a accidental  Burn on my Finger


Any in site on what else it is safe to try on would be appreciated!



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Charles MacDonald Stittsville Ontario
cm...@zeusprune.ca  Just Beyond the Fringe
No Microsoft Products were used in sending this e-mail.

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[neonixie-l] Re: Useful tool on eBay...

[Nick]

New alternative:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem=161049885800  


Nick
On Thursday, 3 September 2015 14:03:18 UTC+1, Nick wrote:
>
> Not my auction - I already have one of these - quite useful when you are 
> and about or in the lab and want to quickly check tubes for gas (when they 
> should have some, e.g. nixies) and gas when they shouldn't (like radio 
> valves).
>
> http://www.ebay.co.uk/itm/351471098985 
>
> Nick
>

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Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

[Dekatron42]

Nice!

How would three or four STTH1R06 HV rectifiers work instead of two of the 
800V or 1KV versions, just as well or would other problems arise?

/Martin

On Monday, 9 November 2015 00:48:52 UTC+1, taylorjpt wrote:
>
> Load testing is done and the transient performance is right on target 
> using a 1.3W active preload.  
>
> Plot on first page of 0214 PDF is voltage at the end of the new 2 meter 
> cable 3 conductor cable with a 100mA 9V load and 0-82mA 170V load step.
>
> Plot on the second page is the input to the HV rectifier showing the 
> reverse bias stress:  As is with the 2 x 600V diodes in series there is 
> 300V of margin at 240VAC input so for 240VAC in, the 800V or 1KV diodes of 
> the same family would result in increased reliability and transient margin. 
> The switching speed of the converter is only 31kHz (32uS period) so that 
> the increase in Trr of the higher voltage devices will not be a problem.
>
> The next step is to back the preload current off to its minimum while 
> maintaining the 9V output cross regulation performance.
>

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Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

[taylorjpt]

3 would work just fine at 600x3=1800V vs 800x2=1600.  I will switch to the 1KV 
parts since I already have PWBs.

The forward bias efficiency impact will be minimal for two vs three diodes as 
the forard voltage at these low currents is so much smaller than the output 
voltage.

It may even be a wash as the 600V parts are faster and energy is dissipated as 
the devices switch from on to off during those Trr nano seconds.  A faster part 
is less energy.  In either case, it's not worth the energy to calculate it!

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Re: [neonixie-l] Useful tool on eBay...

['Terry S' via neonixie-l]

Works on nixies, fluorescent bulbs, neon signs.

On Sunday, November 8, 2015 at 2:31:12 PM UTC-6, charles wrote:
>
> On 15-11-08 01:23 PM, Paolo Cravero wrote: 
> > Two months have passed and I haven't yet gotten my hands on a laptop CFL 
> > driver. Still, I would like to have a battery operated "wireless" Nixie 
> > tester for flea markets like the Masonlite device. During my electronics 
> > shopping wanderings these circuits came out: 
>
> I recently got a unit simalar to this... 
>
>
> http://www.ebay.ca/itm/Portable-Handheld-Neon-Tube-Lamp-Fluorescent-LED-Tester-/281225125040?hash=item417a52dcb0:g:UP0AAOSwNSxVZqLf
>  
>
>
> Have not gotten beyond lighting up some NE-51 lamps that were still in 
> their package  and giving myself a accidental  Burn on my Finger 
>
> Any in site on what else it is safe to try on would be appreciated! 
>
>
>
> -- 
> Charles MacDonald Stittsville Ontario 
> cm...@zeusprune.ca   Just Beyond the Fringe 
> No Microsoft Products were used in sending this e-mail. 
>

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Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

[Dekatron42]

Thank you for the answer!

I realise I need better probes for my scope to make the measurement you did 
in the second scope picture, I only have standard probes that aren't rated 
for those pulse voltages. Where did you hook up the probe to show that 
trace?

/Martin

On Monday, 9 November 2015 01:27:22 UTC+1, taylorjpt wrote:
>
> 3 would work just fine at 600x3=1800V vs 800x2=1600.  I will switch to the 
> 1KV parts since I already have PWBs.
>
> The forward bias efficiency impact will be minimal for two vs three diodes 
> as the forard voltage at these low currents is so much smaller than the 
> output voltage.
>
> It may even be a wash as the 600V parts are faster and energy is 
> dissipated as the devices switch from on to off during those Trr nano 
> seconds.  A faster part is less energy.  In either case, it's not worth the 
> energy to calculate it!
>
>

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