Tube Rectifier
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- djunks2
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Tube Rectifier
Just started my 18 Trem this weekend. Man, talk about cramming a lot of stuff into a small space. The chassis I've used for my home audio amps are mansions compared to the guitar stuff. Not to mention those darn little 9 pin sockets. Anyway...I'm building from a kit and the wiring schematic and PT transformer it came with are meant for a CC rectifier. I'm using a NOS 6CA4 along with some other great tubes I got from the Sarge. I've searched the forums and I think I've found info that says it's alright to use the "one-and-only" 6.3 volt tap for the rect. heaters along with the rest of the tubes. True??
Happy Holidays BTW.
Happy Holidays BTW.
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Weeeeellllllll....
You are both partially correct:
The filament is 6.3vac AND indirectly heated; what makes it safe to share the filament heater winding with the other tubes is that the cathode of the 6CA4 is NOT internally connected to the filament as it is in most common rectifier tubes (GZ34/5AR4, 5Y3, 5U4 etc) therefore there isn't B+ riding on the filament winding and zipping straight to ground via the filament CT or ground-reference resistors...ZZZZZZZAP!!!
Hope this helps and enjoy the Holidays!
tubetek
You are both partially correct:
The filament is 6.3vac AND indirectly heated; what makes it safe to share the filament heater winding with the other tubes is that the cathode of the 6CA4 is NOT internally connected to the filament as it is in most common rectifier tubes (GZ34/5AR4, 5Y3, 5U4 etc) therefore there isn't B+ riding on the filament winding and zipping straight to ground via the filament CT or ground-reference resistors...ZZZZZZZAP!!!
Hope this helps and enjoy the Holidays!
tubetek
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Which is exactly what MagicmMan said, only he used 90% fewer wordstubetek wrote:Weeeeellllllll....
You are both partially correct:
The filament is 6.3vac AND indirectly heated; what makes it safe to share the filament heater winding with the other tubes is that the cathode of the 6CA4 is NOT internally connected to the filament as it is in most common rectifier tubes (GZ34/5AR4, 5Y3, 5U4 etc) therefore there isn't B+ riding on the filament winding and zipping straight to ground via the filament CT or ground-reference resistors...ZZZZZZZAP!!!
Hope this helps and enjoy the Holidays!
tubetek
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