Mixed up IN -7 tubes


Discussion for purchasers of our original IN-7 Nixie chessboard

Posts: 44

Joined: Mon Sep 10, 2012 8:49 pm

Post Mon Jul 15, 2013 4:58 pm

Mixed up IN -7 tubes

I have accidently mixed up the IN-7 and the IN-7A tubes. Does this:

1] Does this matter?
2] If it does matter how can I identify the two different nixie tubes?

Site Admin

Posts: 921

Joined: Tue Jul 24, 2012 8:05 pm

Post Mon Jul 15, 2013 8:17 pm

Re: Mixed up IN -7 tubes

Are the numbers printed on the sides still visibe or have you removed them?. If they're now unmarked you can still identify them by looking at the symbol electrodes, you should see 2 different arrangements and one will be 3 times as common as the other - that'll be the IN7. The rarer ones will be the IN7A.

Posts: 44

Joined: Mon Sep 10, 2012 8:49 pm

Post Sun Jul 28, 2013 7:30 pm

Re: Mixed up IN -7 tubes

thank you tony

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