I was taking apart some display adapters recently and I came across some Nixie display chips I hadn’t seen before, namely the HP 1820-0092. It is similar in function to chips like the 74141 – it converts 5V BCD values into high voltage outputs suitable for driving Nixie tubes. Here is a picture:
I had a bunch of them so I decided I should figure out the pinouts. Here are the results:
Hi,
I just came across your site, as I’m searching where to buy one 1820-0092 to populate the 6th digit on my HP 5221B Counter. I have all the other parts, but this one is still missing.
Would you happen to have a spare one you’d consider selling?
Best regards,
Roland
Hey Roland, I saw your post here as I was also researching this part. I have one that I will be listing on eBay soon- I got it in a mixed lot and learned what it was recently. If you’re interested I can put it up right away and send you the link.