Breaking News
Comments
Oldest First | Newest First | Threaded View
Page 1 / 2   >   >>
digital_dreamer
User Rank
Author
Rectifier?
digital_dreamer   10/8/2013 12:13:00 PM
NO RATINGS
Given the specs and the use case, I'd say a rectifier. The tube looks very simple, but I can't see the cathode or anode. What's with all the "empty" space?

MAJ

bobdvb
User Rank
Author
Re: Rectifier?
bobdvb   10/8/2013 12:33:25 PM
NO RATINGS
It is a Mercury Arc Valve rectifier:

http://en.wikipedia.org/wiki/Mercury-arc_valve

http://www.electricstuff.co.uk/mercarc.html

I've seen pictures of them in abandoned buildings:

http://underground-history.co.uk/belsize.php

Rcurl
User Rank
Author
Re: Rectifier?
Rcurl   10/8/2013 3:59:56 PM
NO RATINGS
Caleb Kraft
User Rank
Author
Arc Rectifier
Caleb Kraft   10/8/2013 4:20:11 PM
NO RATINGS
That's an Arc Rectifier! I doscovered them in 2010 and was instantly in love. They glow a wonderful blue green!

Here's my article from back then.

Caleb Kraft
User Rank
Author
Re: Arc Rectifier
Caleb Kraft   10/8/2013 4:21:23 PM
NO RATINGS
Here's a direct link to a video of one lit up. Man, so amazingly pretty.

Rcurl
User Rank
Author
Re: Arc Rectifier
Rcurl   10/8/2013 5:11:25 PM
NO RATINGS
These guys are a lot more complicated than I realized. I found this quirky video with an in-depth explanation of how they work: http://www.youtube.com/watch?v=6Oq9VC94vbw

After looking at videos of these tubes in operation, I am amazed at the erratic flickering of the arc.  I would guess that the output is pretty noisy! 

David Ashton
User Rank
Author
Re: Rectifier?
David Ashton   10/8/2013 5:14:29 PM
NO RATINGS
@bobdvd - the link to the underground history pics had a remark that confirms what I seemed to remember - that they emit heaps of UV and it's not good to look at them for long.

bobdvb
User Rank
Author
Re: Rectifier?
bobdvb   10/9/2013 6:20:09 AM
NO RATINGS
I was wondering if they also emmit significant x-rays as well? Given the quantity of electrons involved I can't imagine their not being emission!

Edit: I read somewhere that the voltage is too low for x-ray emission.

Yog-Sothoth
User Rank
Author
Re: Rectifier?
Yog-Sothoth   10/9/2013 6:54:48 AM
NO RATINGS
Yes, it's a mercury arc rectifier. When I was a kid I recall seeing one in the Scince Museum in London, and it was working at the time. Emitted a blue-green glow when it was working. The cathode was a pool of mercury at the bottom, the anodes were (I think) carbon rods in the tubes around the sides.

Max The Magnificent
User Rank
Author
Re: Rectifier?
Max The Magnificent   10/9/2013 11:04:49 AM
NO RATINGS
@digital_dreamer: Given the specs and the use case, I'd say a rectifier.

That's my guess -- a mercury arc valve rectifier -- I would LOVE to have this in my office!!!

Page 1 / 2   >   >>


Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Radio
LATEST ARCHIVED BROADCAST

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.

Brought to you by:

Like Us on Facebook
Special Video Section
In this short video we show an LED light demo to ...
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
Silego Technology’s highly versatile Mixed-signal GreenPAK ...
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...