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|previous: Mark Knapp Stupid Standby Question -- 2/22/2000 1:34 AM||View Thread|
|2/23/2000 6:13 PM|
|Stephen Conner||actually quite a deep issue|
Turning off the rectifier heater would have the desired
effect. However, and this is especially true with 'soft
start' indirectly-heated rectifiers like the GZ34,
every time you warm the rectifier up onto a load (ie with
the power tubes already hot) you will damage the cathode
coating a little. The life of your rectifier will probably
Having said that, with the usual standby switch
configuration, the current surge when you flip the switch
to 'operate' will damage the cathodes too. The question
is, which way does the least damage? Who knows? Not me.
I *do* know that disconnecting one of the AC rails from
the rectifier to reduce the voltage is a no-no.
You will not get much of a reduction in voltage, but the
remaining half of the rectifier will be overloaded and the
transformer will hate it too.
|dpcoyle As long as the heater is warm, you ... -- 2/23/2000 7:59 PM|