... Okay ! Could you remind me about something regarding those boards, when they arrived the holes for the pin receptacles were the correct size, yet when I...
I'd just like to add that I'd be curious to find out what the cost of the boards is. I've posted to the poll that I'd be interested in 20, but that will...
It may be easier to buy some boards direct from Onno, who has some for sale, rather than go for another run of boards. I have had a couple of these boards...
... These new smartsockets sound very interesting. I'd buy a dozen or so of them. One thing that would be of interest would be a power supply board that took a...
... Can the brightness be controlled by the firmware? Assuming the filament and anode voltages are fixed, I guess this would have to be done by turning each...
... Just to let yoiu know that I've already changed the spec. Now, I am looking at making a 4 tube board, where each tube is individually programmable with...
... Thanks for the offer guus. I really would rather have a go myself because it seems I would like to get my first surface mount PCB under my belt. At the...
Following the recent poll and messages on this forum i can tell you that i've currently have over 60 smartsocket boards for B7971 tubes available for sale. If...
... There does seem to be a lot of variation from the board files at this group and those available as described above. I only offer to run some boards out at...
... I had a batch of boards made using the files in the files section, and the only obvious revision required was that the drill size which I employed for the...
The board house I use has no problem with hole sizes so if you could tell me what the optimal hole sizes are for the tube end as well as the sockets I can...
I was able to get all the specs for the hole sizes etc. I can sympathize with you as to time for work (School); I have a full time job as well as an engineer...
... The hole sizes on the Eagle CADD file looked right for a loose fit (0.086" diameter) but if not specified as "After plating" these can shrink by a factor...
The talk of VFDs is making me want to dust off my boxes of them. My favorite is the one attached. I still have several thousand 14 segment x 40 character...
... I'm sorry that I can't be more precise, but between a few weeks and a few months. I am in the process of changing the hardware again now, and instead of...
... Is the Vbb a fixed 40V or adjustable (You're doing brightness in software, right)? A saturating converter is an easy way to get the voltage you need plus...
... It is not fixed John. I am using 40V as a ballpark figure. Adjusting brightness by adjusting voltage is known to cause problems with nixies,and I have also...
... So, according to that datasheet, controlling brightness by controlling voltage is definitely a bad idea. SO I'm on the right track by sticking with duty...
... I'm probably not the John you meant, but I like to capacitively couple a square wave to the filament. You can adjust the current via capacitor size and...
... Good tips, thanks. I'll be looking to run the SMPS at above 20kHz, so what would be the best way to couple the filament drive to the square wave signal if...
