OTL Asylum

Its the other way around

97.116.18.47

Ralph

In Reply to: RE: Thanks (nt) posted by WALLACE on September 08, 2008 at 07:15:00

With low heater voltages, the cathode can be stripped of its plating.

OTOH with no B+ there is no problem- the tube can sit this way almost indefinitely.

Follow Ups:

So then...in that case.... - Simon Templar 22:23:03 09/20/08 (1)
....to get longest possible tube life in my MA1 II.2's, should I only power to standby and not shut them off completely from day to day as I have been doing?

And (I've always wondered about this) does this also turn off the B+ in the SN7's...or just the power tubes?

....sT
- RE: So then...in that case.... - Ralph 09:22:48 09/22/08 (0)
  I would turn them completely off when you are asleep or at work- there is nothing to gain by leaving them in Standby all the time.
  
  I usually put the amps in Standby as the first thing I do when I get home, and shutting them off is one of the last things I do when I go to bed.
RE: Its the other way around - Zero Cool 12:08:07 09/10/08 (0)
I have considered making "Burn In Racks" for tubes. maybe 8 tubes at a time. I wonder if there would be any market for such a thing?? Nice elegant wood box with sockets for up to 8 tubes that would supply filament voltage. I Could even make a deluxe model with a 24 hour timer to shut the tubes off once "baked!"

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