[TechAssist] Re: Any info on this old tube/ additional info
- From: Jim Myers <jr.myers@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 30 Apr 2004 09:52:12 -0500
That jogged a memory, sounds like a NIXIE tube, some have 11 pins. Take
a look here: http://www.sphere.bc.ca/test/nixies.html
*******************************************************************************************************************
Since 1972
Jim Myers
Telrad Electronics
Fort Wayne, Indiana
Hoyt's TV wrote:
> I used to repair Chrondek timers for New England Dragway. They had display
> tubes that read out numbers. They were an odd (compared to radio & TV)
> configuration, but I don't remember how many pins they had.
> The early versions were about the size of a 6SN7 and had a series of dots
> arranged in a circle at the top of the tube to line up with a number (0 to
> 9) painted on the case. The later ones read out actual numbers by having
> internal grid wires shaped as a number, and were more the size of a 9 pin
> miniature tube. Those read out from the side of the envelope. Of course both
> they had to have more than 9 pins and probably would have had 11. They lit
> up like a neon lamp. Had to have a wire grid for each one of the digits 0 to
> 9 plus the other pole to conduct to. That would add up to 11 pins.
>
> Those were in use in 1968 and stayed until a new computerized system was
> developed in the 80s, based on the 386 chips. One of the engineers who
> worked for Chrondek, did a project on the design of a system with a direct
> speed read out at about that time (68), for his masters thesis. The system
> in use at the time simply read the elapsed time for a car passing through a
> pair of beams 132 feet apart, that were situated 66 feet before and 66 feet
> after the finish line. The timer operator then had to look up the reading on
> a conversion chart to write the speed on the timing slip for the driver.
>
> Russ Hoyt
> Hoyt's TV
> Exeter, NH
>
>
> ----- Original Message -----
> From: <Royal19960@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, April 28, 2004 2:41 PM
> Subject: [TechAssist] Any info on this old tube/ additional info
>
>
>
>>Hi all, Thanks for all the responces and here is all the info I can
>
> supply.
>
>>Tube number is in a Sylvania box with a number os 13-27681-4
>>Size is like a 6sn7
>>Bakelite base with a key
>>Has 11 pins
>>made in 1968
>>The words "red"" blue" are stamped on the base
>>There is a visable grid on one side of the tube.
>>Thats all I can offer in info. Thanks in advance
>>Roy
>>Roy Adams
>>Bonded TV Service
>>5158 W Forest Home Ave
>>Milwaukee, WI 53219
>>414-541-9111
>>www.Bondedtv.com
>>we have thousands of tubes on the site
>>Webhosting from only 4.95 a month at Bondedhost.com
>>
>>
>>
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