proper load for N6128/23

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

micjacks71

New member
Joined
Feb 1, 2012
Messages
3
I would like to test this AKG supply before chancing it with a mic. What would be the correct load for the 5v and 6.3v filament supplies?
 
This is a switchable supply for AKG C12A and C12 microphones. The C12A I have uses a 7586 tube, which specs at a filament current of 135ma at 6.3volts. The C12A schematic and the Heizspannung switch show 5v to the filament pin.  What value of load resistor(s) should I use? I don't have a schematic of this supply.
 
> filament current of 135ma at 6.3volts

6.3V/0.135A = 46.66667 ohms (use 47 ohms) at 0.83 Watts (use 1W for quick test, 2W for long-term cooking).
 

Latest posts

Back
Top