Me is said that the Russian K155XXx series has an aberrant (metric) pitch of 2,5mm instead of 0.1" (2,54mm) You have to consider that in your lay-out.
Btw., I have here a condensed pdf of the K155XXx series datasheets (not as extended as Western ones). eric -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Adam Jacobs Sent: donderdag 1 maart 2012 16:06 To: [email protected] Subject: Re: [neonixie-l] Re: Alternative to MPSA42 for direct drive clocks. The 74141 or K155ID1 will both work fine for cathode side blanking, provided that your HV supply is a normal value (180vdc). If you are using something very high, like 250v, then you're going to start running into the problem that the 74141/K155ID1 are not able to extinguish the nixie. FYI, the K155ID1 has somewhat different voltage characteristics than the 74141. I understand that the 74141 can sink something like 60v, where the K155ID1 can sink 100v. I think that most nixies extinguish at about 135vdc or so. -Adam On 3/1/2012 6:52 AM, Ron Schuster wrote: > Could you clarify something for me? Are you saying is that a 74141 > should not be used for cathode-side blanking? What about the Russian > K155ID1, which I assume has similar specs to the 74141? > > On Feb 28, 7:24 pm, David Forbes<[email protected]> wrote: >> On 2/28/12 4:48 PM, Deviantgeek wrote: >> >>> I was looking at the Supertex drivers, mainly the HV5522. Its 220v vs >>> 300v, would that still work? I am driving 6 IN-18 tubes. I was also >>> looking at the SN75468, and a few 50v drivers(TPIC6A596)which I think >>> is too low... I will be building several clocks, and I want good, >>> reliable, cheap drivers. >>> (this is just for the cathodes) >> The voltage required depends on what sort of control you plan to use, >> and how many volts you apply to the anodes. The important thing to >> remember is that if one cathode is lit, then the other cathodes don't >> need more than 50V to turn them off. That's why the 74141 works with its >> 55V Zener diode clamps on its outputs. >> >> If you want to display one or two cathodes in every tube at all times >> (no blanking, but possibly fading between numbers), then a 50V driver is >> barely sufficient. Or you can use an anode driver to blank the tube. I >> use the TD62083 in my Nixie watch, and it works fine. >> >> If you want to blank the digit with the cathode, then a 100V driver >> would be necessary and you'd need to use a power supply below 200V. >> >> If you want to blank the tube and use a>200V supply, then you need a >> higher voltage cathode driver or an anode blanking circuit. >> >> I think most of the Supertex parts want 12V on their signal lines, so >> they are not very easy to use since normal logic uses 5V levels. >> >> -- >> David Forbes, Tucson AZ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
