Re: [neonixie-l] Camera Neons

2014-05-30 Thread Charles MacDonald 

On 14-05-30 10:03 PM, Arne Rossius wrote:

Hi,

H. Carl Ott wrote:

  That 200v strike was probably something special order just for use in
flash circuits to let  the user know the cap was charged.


They were also used to prevent the cap from overcharging. I wonder how
this is done in the cameras that use an LED indicator.


Probably a limiter in the circuit, which also is gentler on the battery.


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

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Re: [neonixie-l] Camera Neons

2014-05-30 Thread Arne Rossius 
Hi,

H. Carl Ott wrote:
>  That 200v strike was probably something special order just for use in
> flash circuits to let  the user know the cap was charged. 

They were also used to prevent the cap from overcharging. I wonder how
this is done in the cameras that use an LED indicator.


Best Regards,
Arne

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Re: [neonixie-l] Camera Neons

2014-05-30 Thread Matthew Smith 

I knew I'd seen these somewhere - disposable camera boards:

http://www.goldmine-elec-products.com/prodinfo.asp?number=G17610B

Also available singly, plus they have another type on there - I put 
'disposable camera' into the site search.



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Re: [neonixie-l] Camera Neons

2014-05-30 Thread H. Carl Ott 
A few more.
http://www.rexim.com/pages/neon.html

But nothing really that small.

 That 200v strike was probably something special order just for use in
flash circuits to let  the user know the cap was charged.




carl

Henry Carl Ott   N2RVQhcarl...@gmail.com


On Fri, May 30, 2014 at 5:40 AM, Andybiker  wrote:

> About a decade ago I used the *TINY* neons from disposable cameras to make
> a fake 'colon' tube - it worked really well.
>
> Now years later I cannot find any, all new disposable cameras use an led.
> Does anyone know where I can buy some?
>
> These neons were about 3 mm in diameter and about 4mm long. I cannot find
> any this small. The odd thing about them was they needed about 200+v to
> light.
>
> Despite these being in a cheap disposable camera the neons are still
> perfectly clear after all the years. Does anyone have a source?
>
> Cheers,
>
> Andrew
>
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Re: [neonixie-l] Re: Camera Neons

2014-05-30 Thread John Rehwinkel 
> About a decade ago I used the *TINY* neons from disposable cameras to make a 
> fake 'colon' tube - it worked really well.
> 
> Now years later I cannot find any, all new disposable cameras use an led. 
> Does anyone know where I can buy some?

http://www.allspectrum.com/store/neon-lamps-c-29.html

- John

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[neonixie-l] Re: Careful what you use to power your nixies...

2014-05-30 Thread gregeb...@hotmail.com 
What is the typical signature of a counterfeit capacitor ? I'm mostly 
concerned about the ~450V electrolytics that are commonly used for 
anode-supply filtering. 

In my designs, I always have a series resistor and fast-blow fuse 
(typically 3/8 amp; smaller ones get *really* expensive...) which are sized 
to burn-out if significantly higher current is drawn, for example an 
electrolytic that is breaking-down, etc.

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[neonixie-l] Re: Camera Neons

2014-05-30 Thread Nathan Campos 
It'll be extremely difficult to find a disposable camera with a neon lamp 
instead of an LED these days, but if you search on eBay you can find a lot 
of small neon lamps (usually NOS). Here's what I was able to find after 
searching for "miniature neon bulb" 

.

Best Regards,
Nathan Campos

On Friday, May 30, 2014 6:40:35 AM UTC-3, andybiker wrote:
>
> About a decade ago I used the *TINY* neons from disposable cameras to make 
> a fake 'colon' tube - it worked really well.
>
> Now years later I cannot find any, all new disposable cameras use an led. 
> Does anyone know where I can buy some?
>
> These neons were about 3 mm in diameter and about 4mm long. I cannot find 
> any this small. The odd thing about them was they needed about 200+v to 
> light.
>
> Despite these being in a cheap disposable camera the neons are still 
> perfectly clear after all the years. Does anyone have a source?
>
> Cheers,
>
> Andrew
>

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[neonixie-l] Re: Careful what you use to power your nixies...

2014-05-30 Thread Nathan Campos 
Sadly there are a lot of extremely dangerous super-cheap power supplies out 
there. What I usually do when I receive a product that comes with a power 
supply that isn't from the same brand or looks a bit suspicious is open it 
up and check how safe it is. Most of the time the PCB is fairly safe, with 
a good amount of clearance and OK quality components, but usually they 
don't pay much attention to the mains wiring, using extremely thin and 
flimsy wire which can break off and short something out pretty easily, so 
most of the time all I have to do is apply some hot glue just to make sure 
it stays in place.

About the fake components, specially capacitors, it's extremely easy to 
spot by checking them with a LCR or ESR meter. Thankfully I still haven't 
had any issues with fake parts from Digi-Key or eBay.

On Thursday, May 22, 2014 9:56:36 AM UTC-3, Nick wrote:
>
> http://www.bbc.co.uk/news/uk-27515446 
>
> Nick
>

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[neonixie-l] Camera Neons

2014-05-30 Thread Andybiker 
About a decade ago I used the *TINY* neons from disposable cameras to make a
fake 'colon' tube - it worked really well.

Now years later I cannot find any, all new disposable cameras use an led.
Does anyone know where I can buy some?

These neons were about 3 mm in diameter and about 4mm long. I cannot find
any this small. The odd thing about them was they needed about 200+v to
light.

Despite these being in a cheap disposable camera the neons are still
perfectly clear after all the years. Does anyone have a source?

Cheers,

Andrew

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