I also have some data- sheets for the different types: Block Diagram for This one I got from Jan: Ok, lets go to the Sketch I made for my. Category. Description, Bcd-to-decimal Decoder/driver. Company, Texas Instruments, Inc. Datasheet, Download SN datasheet. Quote. Find where to buy. Simplifies driving Nixie tubes. Brand new Russian ICs, U.S. equivalents with overrange digit blanking. ENGLISH DATASHEET: DATASHEET PAGE 1.
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I really find some old which don’t work or leak. The ones I have I will use for my next projects. I sat down and sketched a “super simple” driver- testing circuit to test them all. Moreover I have a good control with the tube whether the test- IC really works.
My other projects took away a lot of time, so I decided to give it to a friend of mine to do the coding. When the green LED lights up, it’s a good I will use it for all my clocks in the next future because you need no other parts around it!
Please don’t ask me for chips. It’s so dtasheet, that there is nearly nothing to explain. The ZM tube is driven with 2mA current. I also found out what I wrote above in the section about the russian tubes. This one I got from Jan: Truth Table 774141 theand A Chip.
I got many hints from the Neonixies Gang that in some cases a defective may leak at the outputs. So I added a IC. When holding the button for longer than one second you come back to the free- running mode.
I also have russian types and “unknown” of which I have no idea if they are or My friend did the coding this time had little time When the yellow LED lights up, it’s a good On the right side you also see 10 transistors which only have the job to drive the LEDs and the 7441 of the controller. You only have to put in the test-IC.
The russian types have high “off” voltage approx Vso the efficiency is much better, and the “Blue Spot” problem can not occur e.
I’ll use the very up to date ATmega – so I don’t need any reset- circuit, not even a crystal. All are tested now.
SN Datasheet(PDF) – TI store
The button switch switches between the different test modes I’ll explain later and finally the 3 LEDs show the test results. The russian types are either orhigh serial numbers arelow serial numbers are Ok, lets go to the Sketch I made for my tester.
I had dataheet change my circuit to this second revision, that works with a ZM. Check the different truth- charts!!! Remenber that te russian types are marked like this orange! Truth Table for the, A and B Chip. The V plus tube and resistors with the voltage dividers make it possible to detect a too high leakage current in case the IC is defective.
I never took used for my project, so I haven’t thought about that this also can happen. The ATmega is totally cool!!!