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  #46  
Old 07-24-2012, 02:13 PM
neocyke neocyke is offline
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Woah. That's just a lil bit above my level. Playing around with 120-180 volts.. hmmm.. Don't think I have anything up to that level yet. All I got for tinkering is a 12v DC transformer and a teeny variable 1.5-12v AC-DC.. I play around with automotive and some computer electronics which almost never goes over 12v.. Really interesting though. Mayhaps that dead VCR in the corner has some use later on..

Anyway, to the VFD at hand. Today after riding and parking in the dark, I noticed that the wires are indeed getting some current. They were faintly glowing.. Which means you guys were right, the VFD isn't dead. Something else is. Now just need to figure out what.. Gonna have to dismantle it again over the weekend or when I gots some free time.. Well, at least I know the re-soldered broken trace did do *something*


p/s: the attached isn't actually my tube but it's doing the same thing
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  #47  
Old 07-24-2012, 09:27 PM
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A voltmeter can tell you what's going on there. Besides the filament voltage, most VFD take 35-40V to light up. If it is installed in equipment, the anode or grid segments may be 'scanned' with a voltage from the display driver IC, each one in turn being high or low, to light up the desired segments. Don't be surprised if the filament is at a negative DC potential and the anodes near GND. A scope can show you what is being pulsed or scanned.

About the higher voltages, at some time, if you work with them, it can only make you a better tech and wiser collector.
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  #48  
Old 07-25-2012, 04:01 PM
neocyke neocyke is offline
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Thanks for the tip Opcom. Looks like I've got a good deal to learn about VFDs. Really interesting tech these.. We'll see soon how I get on..
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  #49  
Old 08-04-2012, 09:03 AM
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i have the VFD module from a wrecked Pioneer CT-F600 cassette deck, i'd like to use it as a VUmeter in a small portable PA amp i'm building, would it be possible to use this module with the 12 volts supply available in the amp?
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  #50  
Old 12-19-2012, 09:23 PM
mbates14 mbates14 is offline
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Yes, you should be able to. However, I dont know if it requires DC rectification and time constant beforehand. I think it does. But you still need to supply a proper filament voltage. Usually 5V with a dropping resistor will suffice, but even brightness will be a factor.
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  #51  
Old 06-26-2013, 12:42 AM
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Question

Quote:
Originally Posted by packrat79 View Post
Somewhere in my parts pile, I have a rather large VFD from an old satellite receiver (I think), it's about 8" long and has roughly 10 or 12 grids of pixels (10 x 15 each or something like that) that can be used to spell out letters, numbers etc. Sort of like a small marquee sign, but it's VFD instead of LED / LCD. I bet you'd have fun with it! Make me a good offer and it's yours......
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Last edited by Visual; 06-26-2013 at 08:44 AM.
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  #53  
Old 08-16-2013, 09:51 PM
mbates14 mbates14 is offline
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oooooo purtyfull.
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  #54  
Old 08-16-2013, 09:52 PM
mbates14 mbates14 is offline
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Quote:
Originally Posted by mbates14 View Post
Here are the few that I forgot:

the graphics VFD was a chip-on-glass one that I had gotten, no datasheet or pinout available, so i had to reverse engineer it myself. Although with the ghosting, I never did get too much further with it. My guess was it was a 3.3V VFD that I was driving with 5V.
I found out that these VFDs were used in the 2008ish era chrysler factory radios.
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  #55  
Old 08-16-2013, 10:08 PM
mbates14 mbates14 is offline
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A few new ones added to my collection, AND a noritake VFD sample from noritake themselves, KS0108 compatible!





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  #56  
Old 12-07-2013, 01:28 PM
mbates14 mbates14 is offline
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I have been at it again.

These Futaba displays are actually on ebay right now for a mere $2.50 a piece. So i got a few and built a circuit.
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  #57  
Old 12-07-2013, 01:33 PM
mbates14 mbates14 is offline
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Another thing I want to note, is Noritake now has a shopping e-commerce site setup for sales and Also, they offer free samples on a couple of their products.

They have a few selections for cheap discount prices if your into development for microcontrollers, or arduino, etc.. They offer the C libraries for their 7000 series for arduino. They are also running a special for 50% off on their modules. This is by no means an advertisement or sales promotion, Its just something I found awesome that they are doing. Thats all.
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  #58  
Old 12-10-2013, 02:26 AM
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Lightbulb vcr is victor hr-z1

vcr is victor hr-z1http://bokenasu.oops.jp/junk/z1/z1.htm
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  #59  
Old 12-10-2013, 08:58 AM
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i DONT know were COME from your is, mbates14 but here some USA locations of FUTABA http://goo.gl/maps/uRzcb
http://www.futaba.com/corporate/locations/index.asp
GOOD TRIP
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  #60  
Old 12-10-2013, 09:04 AM
mbates14 mbates14 is offline
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Speaking of fluke and futaba, I need to find a replacement VFD for my fluke 45 benchtop. They are long since discontinued.
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