T&L Publications

Hi,

A while ago, (probably a long while ago..) there was a construction article in one of the electronics magazines. It was basically a simple night light that used an old gas regulator tube as the light source and I believe a couple of mirrors. I'm not sure if this appeared in a Nuts and Volts or Popular Electronics or Radio Electronics or maybe even one of the semi-annual project magazines that used to come out. In any case I would like to find that article if possible.

Sorry I can't be more specific than this but unfortunately that's all I remember about it.

Recreating the circuit isn't an issue, just want the article...

Thanks,

Kerry

hi, i know exactly what your talking about,, i built that project. i still have it after all these years..
i'll dig around and see if i still have the schematics, if not then i'll back track the one i have for you..

i'd post a foto if it if i can...

Hi,

Thanks for the quick response!

A pix would be great..

Schematic appreciated,

Name and month of the magazine and you'll have made an old tech very happy! I have been trying to locate this for some time now.





Kerry

Hi there,

Just a note...

There are modern LED nightlight circuits that use very little power
(like 1/2 watt). Perhaps you would want to build one of these?

hi again,, i am still looking for the magazine..cannot find it yet,,still digging thru stacks of books..

i will try to post a few fotos now, if i can..if not , then i will e-mail them to you..

the tube used is a voltage regulator tube "OA3" the tube i use is pumped with neon gas,,altho some were pumped with argon and a touch of mercury,and gave off a bluish glow..but it was weak, the common neon ones worked best, and were brightest.

the tube socket i used was actually a 8 pin relay socket with a notched keyway..it was perfect for this project since this socket was a older version made of melmack?

all the parts mounted neatly too..

i will describe the parts and connections here.. i hope you understand them,,

1st the parts list..

1 - 47k 2 watt
1 - 1.5k 5 watt
1 - 82ohm 1 watt
1 - 22µf 250 volt axiel cap ( type with lead on each end )
1 - 1N4004 dioad (from junkbox )
1 - 1/2 amp fuze for safety

ok, heres how to connect it.. the relay base (tube socket ) has a number for each connection. they are in the order as such.. 6-5-4-3
tube
7-8-1-2
keyway is between pin 1 & 8

ok here goes the connections,, its easy.

power cord connects to fuze then to pin 7

82ohm resistor connects from pin 7 then anode of dioad connects to 82ohm resistor ( solider in series ) then cathode of dioad connects to pin 8 of socket.

next,, you will parallel the 22µf cap. across 47k resistor..then connect it to pins 8 and 2...NOTE neg. side of cap will connect to pin 2 .

the other end of power cord will connect to pin 2 also.

next and last... connect the 1.5k resistor to pins 3 and 5.

ok,, now i will attempt to add the fotos...

good luck,, let me know what happens

i do not know what the life of this tube will be if left on all the time,, mine i just turn it on long enough to show friends how cool it is..
i have mine sitting on top of my 1937 SEARS SILVERTONE radio.
its all restored also.. love it !
i will still look for the artical too..

Nice job with this project and I appreciate the information!

Will check back from time to time to see if you had any luck with finding the magazine and I really appreciate your efforts!


Kerry

sorry about the delay, but i still haven't found the artical.. i am almost sure it was in a "electronics now" magazine.
i hope its not lost.. will keep looking..will let you know also when i give up..

dacflyer wrote:sorry about the delay, but i still haven't found the artical.. i am almost sure it was in a "electronics now" magazine.
i hope its not lost.. will keep looking..will let you know also when i give up..

Sorry to bug you

Did you ever find the article? I'd still like to find a copy ofwhatever magazine that was in...

Kerry

Another version:
http://www.electronixandmore.com/project/2.html
Google is our friend!
John

sorry, totally forgot about it ...i will try to find time and dig for it again...

dacflyer wrote:sorry, totally forgot about it ...i will try to find time and dig for it again...

Checking back for my two year (approx) update...

Any luck??? (grin)

Kerry

sorry, never found the article.. best i could do for you is to draw out a schematic.
if you like i can do it sometime soon then try to post it here..

dacflyer wrote:sorry, never found the article.. best i could do for you is to draw out a schematic.
if you like i can do it sometime soon then try to post it here..

No need for the schematic..but thanks anyways..

A little more INFO....maybe.

It appears that the article may have appeared in the March, 1995 issue of Popular Electronics, if that helps to jog anyone's memory a bit.

Kerry

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