Tubes Asylum

May I destroy the player if I use a wrong tube? Not if you are going from OB2 to OB2.

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Chip647

In Reply to: RE: Varieties of OB2 voltage stabilizer tube posted by akolegov on December 26, 2016 at 08:35:24

It is just a voltage voltage reference tube that will eat 20mA or so at a given cut-off voltage, in this case 105-108 volts. If you put in a. It is just like a zener. If you replace a OB2 with another OB2 there is absolutely no harm, regardless of the gas in the tube.
Put in a different voltage tube, and you will have other issues.

Follow Ups:

RE: May I destroy the player if I use a wrong tube? Not if you are going from OB2 to OB2. - akolegov 22:29:22 12/27/16 (0)
I got a couple of NOS Mazda OB2 tubes yesterday and replaced the faulty tube. The skipping remains, which means that a thorough disgnostics are required. Or, perhaps, I should try a new laser head.
RE: May I destroy the player if I use a wrong tube? Not if you are going from OB2 to OB2. - akolegov 14:28:48 12/26/16 (2)
I understand. I hope to try a new OC2 tube soon...
- RE: May I destroy the player if I use a wrong tube? Not if you are going from OB2 to OB2. - andy evans 02:03:15 12/27/16 (1)
  I hope to try a new OC2 tube soon... > >
  
  You mean 0B2. Don't use a different voltage.
  
  There are 2 ways to use this kind of voltage regulator
  
  1. Dropper resistor before it. Value must be correct and this is covered in datasheets
  2. DN2540 type regulator before it set for 17mA plus whatever the tubes after it draw
  
  One other thing - you can't use capacitors after these regulator tubes. The most you can use is .068uF in parallel with the tube between B+ and ground.
  - RE: May I destroy the player if I use a wrong tube? Not if you are going from OB2 to OB2. - akolegov 02:55:09 12/27/16 (0)
    Yes, OB2...
    
    As far as I can judge, there are no capacitors after this tube; there is one 6Z4 rectifier near it and some resistors..

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