lukas

Digital Tube Tester
« on: April 07, 2018, 01:50:45 PM »
Tube Tester designed by few Polish Tube LOvers, on the forum. very precise, with internal catalogue (98 tube types). Last 20 position we can change with our own requirement. Some tech info:

Max. Plate Voltage.  300v /200mA            (1v step)   
Max .Second Grid Voltage 300v/40mA  (1v step)
Max First Grid voltage -24v                          (0,1v step)
Max Heater Voltage 15v/4A                         (0,1v step)

Housing:  1.5mm Stainless Steel.
Dimmension:   9,0/24,0/22,6cm
Weight: 3,5kg.
Power input AC 230/115v 50-60Hz.

What we can measure:
Plate Emission, Second Grid Emission, Heater in miliAmpers, Transconductance, Internal Resistance(R), Tube Gain(K).
Meter have electrical, and internal by Microcontroller Protection.(whatsoever we overrun max parameters in miliamperes  tester freeze, all measurements.
I'm asking 570euro, plus some paypal fees, and shipping cost.





« Last Edit: July 04, 2018, 04:54:52 AM by lukas »


API

Re: Digital Tube Tester
« Reply #1 on: April 08, 2018, 01:15:44 PM »
I am interested.
Does it check the tubes at full voltage?

lukas

Re: Digital Tube Tester
« Reply #2 on: April 08, 2018, 03:31:08 PM »
Yup.

Re: Digital Tube Tester
« Reply #3 on: May 18, 2018, 11:35:37 AM »
Hello,
I am interested by your digital tube tester, is it a unique piece of gear ? I don't see this product on Maly website. Thanks.

lukas

Re: Digital Tube Tester
« Reply #4 on: June 24, 2018, 05:20:28 PM »
Tube measurement and voltages accuracy:
6sn7GT
https://youtu.be/i6hWJFjjahc
ef86  volt. accuracy
https://youtu.be/IZrWKUnnbn4
el34
https://youtu.be/w9i5kURVG3Y
el90
https://youtu.be/LOM7KNDxs74
ecc83 volt. accuracy
https://youtu.be/V6EuC5lQBKs

Settings on free slots:
Tube type 12bh7
Electrode system = 1-2(little mistake, add 2 for heating time)
Time Heating  = 1
Grid nr1 Voltages = - 10,5v
Heater voltages  =  12,6v
Anode Voltages = 250v
Plate current   =  11,5mA
Transconductance = 3,1 ma/v
Plate resistance  = 5,3kohm
Amlification Factor = 16,5(plate resistance x transconductance)

https://vimeo.com/276767532
« Last Edit: June 27, 2018, 01:52:40 PM by lukas »

lukas

Re: Digital Tube Tester New
« Reply #5 on: June 25, 2019, 03:42:36 AM »
...i have new one...plus adapters
E99F, EF93, EF95, ECC808, EZ81, EAA91, EF800, EF804, 6386,
EC92, E81L, ECL86, ECF80-2, EF37,6Z31, GZ34, E83F
......... - 10euro each.
« Last Edit: June 25, 2019, 11:45:24 AM by lukas »


 

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