5AU4 Rectifier

67super

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1,503
This rectifier is filament only (no cathode). It's meant for high current applications. Can this be used as a sub for 5AR4/GZ34 ?
Thanks
 

pdf64

Member
Messages
8,713
Maybe; the 5U4 heater draws 3A, compared to 2A of the 5AR4.
So it's best to check the particular PT's 5V winding current rating.
 

67super

Member
Messages
1,503
You're correct Mike and the 5AU4 draws even more current.
 
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