DC heater (+/-) -> elevated?

[Cobra2]

I will experiment with DC-heater on an Aikido, and planned to use a simple regulator-board, with dual (+/-) supply.
Instead of using the made-up centre-(hum)tap for AC to elevate it, should I use the 0V (gnd) for elevation?

Arne K

 

[SemperFi]

I suspect the point of experimenting will be to find the best solution after having tried all posibilities
I have tried both regulated DC and AC heaters and even on high gain circuits (high gain guitar preamps) having the AC heaters biased somewhere between +20 and +90 volts have been jsut as good as reg'ed DC.
With the Aikido one tube (including its cathode) sits at high voltage, so I would place the heaters close to this voltage, preferably above.
Please post ur findings after your experiment.

 

[mashaffer]

Tied to cathode

I am doing a guitar amp (PP 6V6) and was planning on elevating the heaters by just hooking the center tap of the heater winding directly to the cathode of one of the 6V6s. Is there any down side to that approach?

mike

 

[SemperFi]

No probs at all. I think it is the most common approach among those that elevate the heaters.