Author Topic: Geissler tube with a contact problem  (Read 215 times)

Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Geissler tube with a contact problem
« on: December 25, 2017, 11:58:15 AM »
To all friends of antique Geissler tubes

The picture shows a complex shaped Geissler tube.


Unfortunately, the corresponding metal cap with eyelet is missing during a contact.
Please, does anyone know how to fix this problem?

Best regards

Physikfan
« Last Edit: December 29, 2017, 08:30:06 PM by Physikfan »

Offline Mads Barnkob

  • Administrator
  • High Voltage Engineer
  • *****
  • Posts: 450
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Geissler tube with a contact problem
« Reply #1 on: December 25, 2017, 10:21:33 PM »
Sure is a beautiful and complex tube you got there, would be a shame if it can not be repaired.

Is there still a lead/wire in the socket/weld of glass around the conductor?

I have repaired a missing cap on a regular electron tube with a similar cement as those described in these threads: http://www.antiqueradios.com/forums/viewtopic.php?t=101584 and http://www.antiqueradios.com/forums/viewtopic.php?t=151137
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #2 on: December 29, 2017, 08:29:42 PM »
I hope to have found a usable electrically conductive adhesive now
to solve the problem with the one contact (missing metal cap with eyelet).



Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #3 on: December 29, 2017, 10:50:46 PM »
Unfortunately there are more problems:

Contact with cap:



Contact without cap:

Offline Mads Barnkob

  • Administrator
  • High Voltage Engineer
  • *****
  • Posts: 450
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Geissler tube with a contact problem
« Reply #4 on: December 30, 2017, 10:11:08 AM »
Looks like a bust :(

Both terminals are damaged in each their way.

The one missing cap will be hard to repair, maybe try to grind away some of the glass to get access to a tiny bit of the wire, but not breaking vacuum.

The one with cap seems to have lost its discharge terminal on the inside and its rattling around in the end of the tube.
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #5 on: December 31, 2017, 06:47:55 PM »
Hi Mads Barnkob

I have followed your suggestions and have provisionally treated the electrode without cap with conductive silver.
The tube works, the operating voltage is about 13 kV.



One question remains:
Which gas makes this white discharge?

Best regards

Physikfan
« Last Edit: January 02, 2018, 10:46:21 AM by Mads Barnkob »

Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #6 on: January 03, 2018, 10:58:08 PM »
In a catalog for physical demonstration devices from 1909 I found one
similar Geissler tube:


Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #7 on: January 07, 2018, 01:28:01 AM »
These are the first, just with reflection grating and camera primitively recorded grating spectra of the Geissler tube:





The second green line of the first spectrum is also in the second spectrum as the middle line and in the third spectrum
included as the leftmost line.

The question is now:
Which gas coresponds to these spectra.

Best regards

Physikfan

Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #8 on: January 07, 2018, 09:53:15 AM »
This is the composite grating spectrum of Spectrum 1 and Spectrum 3.
However, the colors are strongly distorted by the camera's automatic white balance.



The question is still:
Which gas corresponds to this spectrum?

regards

Physikfan

Offline Physikfan

  • High Voltage Enthusiast
  • *
  • Posts: 17
    • View Profile
Re: Geissler tube with a contact problem
« Reply #9 on: January 13, 2018, 07:27:55 PM »
I will use such a transmission grating spectrum of a fluorescent lamp (mercury lines) to calibrate the lines of the Geissler tube,
green line 546 nm.
« Last Edit: January 13, 2018, 07:49:02 PM by Physikfan »

High Voltage Forum

Re: Geissler tube with a contact problem
« Reply #9 on: January 13, 2018, 07:27:55 PM »

 


* Recent Topics and Posts

post Re: My first drsstc
[Dual Resonant Solid State Tesla coils]
oneKone
Today at 02:12:51 AM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Garyf
January 15, 2018, 06:20:00 PM
post Re: My first drsstc
[Dual Resonant Solid State Tesla coils]
oneKone
January 15, 2018, 03:51:57 AM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
pawlox98
January 14, 2018, 04:40:30 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Laci
January 14, 2018, 01:20:37 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 14, 2018, 01:10:37 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Laci
January 14, 2018, 11:11:40 AM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Laci
January 13, 2018, 09:27:22 PM
post Re: Geissler tube with a contact problem
[Transformer (iron core)]
Physikfan
January 13, 2018, 07:27:55 PM
post Re: Building the OpenTheremin V3
[Electronic circuits]
futurist
January 13, 2018, 02:56:15 PM
post Re: Building the OpenTheremin V3
[Electronic circuits]
Mads Barnkob
January 13, 2018, 07:50:32 AM
post Re: Best core for GDT and FBT
[Solid state Tesla coils]
FilipŠebík
January 13, 2018, 06:57:34 AM
post Re: AliExpress/ Chinese drsstc drivers
[Dual Resonant Solid State Tesla coils]
Garyf
January 12, 2018, 10:58:14 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Laci
January 12, 2018, 09:27:16 PM
post Re: Best core for GDT and FBT
[Solid state Tesla coils]
Mads Barnkob
January 12, 2018, 09:02:04 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 12, 2018, 08:53:29 PM
post Re: Best core for GDT and FBT
[Solid state Tesla coils]
FilipŠebík
January 12, 2018, 07:31:19 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Laci
January 12, 2018, 06:58:59 PM
post Re: My 160 (?)mm sstc
[Solid state Tesla coils]
oneKone
January 12, 2018, 01:17:52 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 12, 2018, 10:19:20 AM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
pawlox98
January 11, 2018, 10:07:19 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 11, 2018, 09:55:31 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
pawlox98
January 11, 2018, 08:27:35 PM
post Re: Highway to DRSSTC
[Dual Resonant Solid State Tesla coils]
Laci
January 11, 2018, 03:17:44 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 11, 2018, 01:12:18 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
pawlox98
January 11, 2018, 12:40:05 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 11, 2018, 12:16:47 PM
post Re: First DRSSTC
[Dual Resonant Solid State Tesla coils]
Garyf
January 11, 2018, 03:44:10 AM
post Re: AliExpress/ Chinese drsstc drivers
[Dual Resonant Solid State Tesla coils]
Garyf
January 11, 2018, 03:36:40 AM
post First DRSSTC
[Dual Resonant Solid State Tesla coils]
pawlox98
January 11, 2018, 12:58:55 AM
post Re: My 160 (?)mm sstc
[Solid state Tesla coils]
oneKone
January 11, 2018, 12:29:19 AM
post Re: Building the OpenTheremin V3
[Electronic circuits]
oneKone
January 11, 2018, 12:00:07 AM
post Re: AliExpress/ Chinese drsstc drivers
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
January 10, 2018, 10:24:37 PM
post Re: Self-oscillating nano Tesla Coil (14.3 MHz)
[Solid state Tesla coils]
tefatronix
January 10, 2018, 09:11:50 PM
post Re: Smartphone scientific oriented games: list your best!
[General chatting]
Mads Barnkob
January 10, 2018, 08:16:29 PM
post Re: Smartphone scientific oriented games: list your best!
[General chatting]
NicholasTow
January 10, 2018, 06:02:54 PM
post Re: AliExpress/ Chinese drsstc drivers
[Dual Resonant Solid State Tesla coils]
FilipŠebík
January 10, 2018, 05:12:25 PM
post My own SSTC Driver v1.0
[Solid state Tesla coils]
FilipŠebík
January 10, 2018, 04:23:28 PM
post Re: My 160 (?)mm sstc
[Solid state Tesla coils]
futurist
January 10, 2018, 03:23:02 PM
post Re: Best core for GDT and FBT
[Solid state Tesla coils]
futurist
January 10, 2018, 03:13:30 PM
post Re: Optical Connection Problems(HFBR-1531Z-2531Z)
[Dual Resonant Solid State Tesla coils]
Laci
January 10, 2018, 02:32:18 PM
post Re: Optical Connection Problems(HFBR-1531Z-2531Z)
[Dual Resonant Solid State Tesla coils]
Netzpfuscher
January 10, 2018, 01:37:13 PM
post Optical Connection Problems(HFBR-1531Z-2531Z)
[Dual Resonant Solid State Tesla coils]
Laci
January 10, 2018, 12:27:39 PM
post Building the OpenTheremin V3
[Electronic circuits]
Mads Barnkob
January 10, 2018, 11:18:42 AM
post Re: Best core for GDT and FBT
[Solid state Tesla coils]
FilipŠebík
January 10, 2018, 08:55:47 AM
post Re: My 160 (?)mm sstc
[Solid state Tesla coils]
oneKone
January 10, 2018, 08:32:14 AM
post Re: My 160 (?)mm sstc
[Solid state Tesla coils]
Mads Barnkob
January 10, 2018, 08:24:46 AM
post Re: sstc drive method
[Solid state Tesla coils]
Mads Barnkob
January 10, 2018, 08:21:06 AM
post Re: sstc drive method
[Solid state Tesla coils]
oneKone
January 10, 2018, 01:36:32 AM
post Re: My 160 (?)mm sstc
[Solid state Tesla coils]
oneKone
January 10, 2018, 01:25:58 AM