Ma Rating for 12AX7 Shaka circuit

[petemoore]

I'm thinking I'd like to try another one...I found another tube, and socket etc.
 I'd think if heat is a consideration in the wall wart, my 9Vac, 780ma wallwart is enough to run one heater...at that it just gets warm.
 The 30 DCV wallwart I'm using to run the circuit sides of the tube is rated at 700ma and doesn't seem even to get warm.
 All that's imprecise...what kind of current requirements does the Shaka circuit require...approximate is close enough.
 I suppose I should try deciphering the Ma readings of my DMM again, but At the same time asking for a generalized number to go by for the circuit.

[Paul Marossy]

I believe that a 12AX7 takes about 250-300mA for the heaters. The rest of the circuit takes hardly any kind of current. The first time that I built mine, I used a 300mA transformer and that worked fine.

[Peter Snowberg]

The heaters take 150mA running at 12.6v and as Paul said the rest of the circuit takes just about nothing.

If you rectify that 9VAC with a bridge rectifier made of 1N5158s, you'll have about 12 or so volts DC. I love how that works out.

You could also take your output voltage and feed that into a 7806 regulator or a 7805 regulator with two 1N4001 diodes in series with the ground pin. That would give you a nice regulated DC filament!

Take care,
-Peter

[petemoore]

I'm thinking I'll be trying for one wallwart, and a regulator for this build.
 After trying this circuit out with many different chains, I'm quite impressed with the performance. Really great working, sounding circuit!!