The IN-4 & IN-18 can be used in the same socket. Physical pin spacing is the same (14-pins, on a 18mm diameter pin circle, 24.5 degrees apart). Pin-out assignments is different, between the two.
Pin # IN-4 IN-18 ==== ==== ==== . 1 . . . K4 . . N/C . 2 . . . K6 . . K4 . 3 . . . K8 . . K5 . 4 . . .SCR* Anode . 5 . . . K9 . . K6 . 6 . . . K7 . . K7 . 7 . . . N/C . K3 . 8 . . . K0 . . N/C . 9 . . . K2 . . K8 .10. . . A2* . K2 .11. . . K3 . . K1 .12. . . K5 . . Anode .13. . . A1*. . K0 .14. . . K1 . . N/C *the IN-4 has two different configurations. One has two anodes (A1 & A2), and separating screen, allowing it to be operated as a bi-quinary nixie, in addition to a "traditional" nixie. The other configuration omits the screen and an anode. It only has one (A1), and can only be operated in the traditional mode. I just plugged an IN-4 tube into a IN-18 socket, and it fits without issue. So this is NOT a guess, but CONFIRMED. Though, I would suggest against the IN-4 for a nixie clock, as it does not contain mercury, and therefore has a short life. I found that out the hard way. My first nixie clock used two IN-4s paired with two ZM1032 (biquinary) nixies: First photo <https://threeneurons.wordpress.com/nixie-power-supply/my-nixie-clocks/> The 8051 uC drove all 4 as a multiplexed biquinary group. 2x4=8 anode drives, and 5-cathode pairs. 8x5. More complicated than it needed to be if I just used regular nixies. Biquinary only has an advantage when run by descrete circuitry. ICs made them obsolete. Well the short life of the IN-4, caused the zero to disappear in less than a year. Mercury is a good thing in nixies (IN-8-2, IN-12, IN-14, IN-16, IN-17, & IN-18). On Wednesday, October 24, 2018 at 9:39:49 AM UTC-7, Mateusz Dziuba wrote: > > Hi! My name is Mateusz and I am trying to build nixie clock on 6 IN-4 > lamps. > I based my design on > https://www.instructables.com/id/simple-user-adjustable-DIY-Nixie-Clock/ > > I want to redesign front shield, but cannot find proper eagle template for > IN-4 on internet. > I download adafruit libraries with russian_tubes.lbr, but it seems they > just link IN-18 template to it. I managed to change pins order as it is for > IN-4, but I am still thinking, the pins positions are not correct. > > Do You have NIXIE IN-4 eagle template? How You manage to design clocks > with IN-4? > > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/bfe4a797-ead3-4709-9aae-830793063917%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
