[Jukebox-list] Tormat selection

[Don]

Here is another site showing a better picture of the tubes and a small 
explanation of the thyratron. From what I read this tube has two states, so 
in the ring counter circuit it acts like a flip flop chip.... and there were 
several varieties of those: D, J-K and various gated FFs.

Googling "thyratron" will give you all manner of definitions for what it is 
and how it works.

http://www.technikum29.de/en/devices/anita.shtm

Don



----- Original Message ----- 
From: "Steve Wahl" <steve at pro-ns.net>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Wednesday, August 15, 2007 11:34 AM
Subject: Re: [Jukebox-list] Tormat selection


> As a seeburg-inexperienced bystander, I am curious if the tube(s) that
> need warming up are in the write in circuit, the read-out circuit, or
> both?
>
> I belive I heard there's a tube in the read-out circuit, but I recall
> it being called a "thyratron" (or something like that), and I may be
> getting my technologies confused... but I recently read an interesting
> article that talks about a calculator that used "cold-cathode" tubes,
> and that article also revers to thyratron tubes.
>
> This is the article:
> http://www.oldcalculatormuseum.com/anitaC-VIII.html
>
> I could be confusing many things: Is thyratron really the word used
> for the tube in the seeburg read-out circuitry?  The calculator
> article doesn't say that all thyratrons are cold-cathode, but makes me
> wonder if they are.
>
> Hope you guys don't mind me trying to satisfy my curiosity here!
>
> --> Steve Wahl
>
>
> On Wed, Aug 15, 2007 at 09:04:18AM -0700, Tyler, Ronald wrote:
>> Wes is saying what I said (or meant to say).
>> Ron Tyler
>>
>> ________________________________
>>
>> From: jukebox-list-bounces at lists.netlojix.com on behalf of Wesley Dean
>> Sent: Wed 8/15/2007 8:46 AM
>> To: Jukebox mailing list
>> Subject: Re: [Jukebox-list] Tormat selection
>>
>>
>>
>>     All cathode type vacuum tubes require a warm up time. A paying 
>> customer
>> expects the juke to be plugged in by the help earlier. Wes
>> ----- Original Message -----
>> From: "Ron Rich" <ronnnrich at yahoo.com>
>> To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
>> Sent: Tuesday, August 14, 2007 8:37 PM
>> Subject: RE: [Jukebox-list] Tormat selection
>>
>>
>> Not really--do you think that paying customers, in a comercial location
>> would put up with that for a minute?  Tube warm up-if everything is 
>> working
>> well, should be no longer than one minute-which is very long !! Ron Rich
>>
>> "Tyler, Ronald" <Ronald.Tyler at pepperdine.edu> wrote:  That is exactly the
>> way it is supposed to act. Trust me.
>> RTyler
>>
>> ________________________________
>>
>> From: jukebox-list-bounces at lists.netlojix.com on behalf of N M
>> Sent: Tue 8/14/2007 5:12 PM
>> To: jukbox reply list
>> Subject: [Jukebox-list] Tormat selection
>>
>>
>>
>> Hi all, I know I've only posted a few times but, I was
>> hoping you guys could give a little insite on a
>> problem.
>>
>> I'm dealing with a Seeburg 101. When you first switch
>> the machine on and make a selection, it will do the
>> scan twice and stop. After it does it one time (scan
>> 2 and stop) it will never do it again. It will work
>> fine as long as it's pluged in. After you unplug it,
>> it will do the same thing on the first time you make a
>> selection.
>>
>> Sound to me like a cap is acting up. You know,
>> building up charge the first time a selection is made
>> and the working ok from then on out.
>>
>> The selection receiver has been rebuilt. You guy got
>> any ideas? I'm puzzled.
>>
>> Nick
>>
>>
>>
>
>
> -- 
> Steve Wahl    steve at pro-ns.net
>
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