VFDs anyone?

mbates14 · 14th October 2005, 01:12 AM

Does anyone have any bargraph/VU VFD tubes? or spectrum analyzer VFD tubes? I need preferably a spec analyzer VFD tube, but a 2 channel bargraph tube would work too.

I lost mine to air

Does anyone have spares or know a cheap supplier?

Leolabs · 18th October 2005, 03:15 PM

Why not try to use LEDs instead of VFD????

mbates14 · 18th October 2005, 07:46 PM

because LEDs look like crapola. They dont appeal to me. At least IMHO.

Simpleton · 18th October 2005, 08:37 PM

Sorry if this may sound inconvenient, but have you considered a bargraph magic eye tube, say a EM800?

mbates14 · 18th October 2005, 08:44 PM

never heard of one

Simpleton · 19th October 2005, 08:22 AM

Here you go

http://www.akh.se/tubes/eyes.htm

mbates14 · 19th October 2005, 03:38 PM

awwwwww, those look sweeeeeeet. Dunno about voltages, but....

aww man. Those look awsome and very linear. I dont like the top view ones, but I love the side views.

Anyone got any? or do I look on the 'bay?

I like the EM800. Its sweet.

Simpleton · 19th October 2005, 03:43 PM

Where do you live?
If in Europe, i usually buy at www.askjanfirst.com, and he has the EM800 at a very low price (i might buy some one of these days for putting in the car

). Of course, Ebay is always an option.
EM84, Em800 are the ones easier to find, then you have the "stereo" EM801.
Search around diyaudio on the tubes section for magic eyes, as it's been discussed not long ago.

mbates14 · 19th October 2005, 03:49 PM

Im in ohio USA.

Aww man, this opened some brilliant ideas. I could make an all tube spectrum analyzer. (external by its self of course).

I dont need a bargraph driver like before, all I would need is negative bias voltages, and a common cathode amplifier with a bandpass filter to drive them? right?

another one I like is the DM160.

Simpleton · 19th October 2005, 06:18 PM

Quite right

A simple amplifier stage just enough to drive the magic eye is what's needed.
You could also aproach the amplifier stage - as you don't need tube heaven hi-fi for display ;-) - as a simple opamp one(cough cough).
I'm driving a 6E5-E directly from line level - looks awesome!

14th October 2005, 01:12 AM	#1
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	VFDs anyone? Does anyone have any bargraph/VU VFD tubes? or spectrum analyzer VFD tubes? I need preferably a spec analyzer VFD tube, but a 2 channel bargraph tube would work too. I lost mine to air Does anyone have spares or know a cheap supplier?

18th October 2005, 08:37 PM	#4
Simpleton diyAudio Member Join Date: Jan 2005 Location: Lisboa	Sorry if this may sound inconvenient, but have you considered a bargraph magic eye tube, say a EM800? __________________ "There's something organic about a happy cloud of electrons" - Neutron Bob

19th October 2005, 08:22 AM	#6
Simpleton diyAudio Member Join Date: Jan 2005 Location: Lisboa	Here you go http://www.akh.se/tubes/eyes.htm __________________ "There's something organic about a happy cloud of electrons" - Neutron Bob

19th October 2005, 03:43 PM	#8
Simpleton diyAudio Member Join Date: Jan 2005 Location: Lisboa	Where do you live? If in Europe, i usually buy at www.askjanfirst.com, and he has the EM800 at a very low price (i might buy some one of these days for putting in the car ). Of course, Ebay is always an option. EM84, Em800 are the ones easier to find, then you have the "stereo" EM801. Search around diyaudio on the tubes section for magic eyes, as it's been discussed not long ago. __________________ "There's something organic about a happy cloud of electrons" - Neutron Bob

19th October 2005, 06:18 PM	#10
Simpleton diyAudio Member Join Date: Jan 2005 Location: Lisboa	Quite right A simple amplifier stage just enough to drive the magic eye is what's needed. You could also aproach the amplifier stage - as you don't need tube heaven hi-fi for display ;-) - as a simple opamp one(cough cough). I'm driving a 6E5-E directly from line level - looks awesome! __________________ "There's something organic about a happy cloud of electrons" - Neutron Bob


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18th October 2005, 03:15 PM	#2
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Why not try to use LEDs instead of VFD????

18th October 2005, 07:46 PM	#3
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	because LEDs look like crapola. They dont appeal to me. At least IMHO.

18th October 2005, 08:44 PM	#5
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	never heard of one

19th October 2005, 03:38 PM	#7
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	awwwwww, those look sweeeeeeet. Dunno about voltages, but.... aww man. Those look awsome and very linear. I dont like the top view ones, but I love the side views. Anyone got any? or do I look on the 'bay? I like the EM800. Its sweet.

19th October 2005, 03:49 PM	#9
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	Im in ohio USA. Aww man, this opened some brilliant ideas. I could make an all tube spectrum analyzer. (external by its self of course). I dont need a bargraph driver like before, all I would need is negative bias voltages, and a common cathode amplifier with a bandpass filter to drive them? right? another one I like is the DM160.

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