Comments on: IV-18 VFD vacuum Russian Clock (part 1)

By: David Dahlem

David Dahlem — Thu, 13 Mar 2014 21:30:40 +0000

Hey, I found your nice project while thining about how I should realize my voltage sources for my own vfd-Tubes-project.

Think I’m stupid, but why do you get 40V DC, if you use a Voltage doubler with 12V AC?

By: RAJ

RAJ — Wed, 07 Apr 2010 04:12:45 +0000

I noticed that you called it a wallmart (external transformer). I think you could change this to a “WallWart” lest you anger the mighty Wallmart Company ;-) I noticed your use of DC to drive the filament if you are using a buck regulator and DC how about placing a resistive load across C4 and placing the heater across L1? I am trying to develop a clock that drives EL panels and have similar issues.

By: Bar

Bar — Sat, 03 Oct 2009 19:32:44 +0000

Hi I know that on ebay.co.uk you should find seller dan_oka , he have 1000′s of them for sale price is around 1-2 GBP each or 500 GBP for 500 pcs

By: admin

admin — Mon, 06 Apr 2009 11:43:18 +0000

I use a AVR ISP for that (In Circuit Programming ..) Chech out Google, most ISP are simple and cost nothing ..

By: Patrick

Patrick — Sat, 04 Apr 2009 17:50:24 +0000

Hi,
Very neat project.
I too got my hands on some of these tubes, and I downloaded the files (for which: my thanks!)
But how does that µController get its programming on it?
Could you elaborate on this?

Cheers
Patrick

By: Jkx

Jkx — Thu, 26 Oct 2006 19:50:27 +0000

Wowcolors check the complete schematic on the second post.

A quick test:

Power the filament with a 5v
Power every other pin with a 20v PSU.

Each PSU (5 and 20v) share the same ground. (The negative for this tube is the filament)

By: amino

amino — Wed, 30 Nov -0001 00:00:00 +0000

I was looking at your project and I just wanted to tell you it is kick ass I am going to try it at home. Hopefully I won't have any issues:)

By: Whory

Whory — Wed, 30 Nov -0001 00:00:00 +0000

Nice project, that’s really awesome! Where can I pick up some of those big ass tubes?

By: Jkx

Jkx — Wed, 30 Nov -0001 00:00:00 +0000

If you want to buy some IV-18 ask URALS-SHOP on Ebay. This guys is really serious, offer good price, and provide best quality tubes.

http://stores.ebay.fr/URALS-SHOP/

Bye Bye

By: wowcolors

wowcolors — Wed, 30 Nov -0001 00:00:00 +0000

I just purchased some of these tubes on ebay and am trying to test light a segment. From the information you posted it seems the metal mesh grid in front of the segment must be powered to positive 5v and each segment to be lit must have positive 20-30v put to it. Where is the negative hooked up then? Also is there a heater in these tubes or what is the common long wire in the back of the tube? Thanks for any help you may give.