Megatron Electrostatic Headphone Amplifier

[kevin gilmore]

somewhere there is a mini board that is a stn9360 to to126 pinout.  but bending the pins is something i have also done.

[G600]

Wow have I ever told you that you are a bold man, Joachim?

Impressive, again!

[Shawn]

Finally, I have time to hand in the Megatron XL. Having some questions here.

What`s a decent static plate current and voltage for 300B?

For the tube rectified power supplies, can we do a solid-state rectifier instead of the GZ34/EZ81?  Assumed we have other soft-start high-voltage circuits populated.

I'm wondering if it's possible to use the Golden Reference HV supply to provide ±450for XL. Does anyone know if the current capability is sufficient?  I'm concerned the total load might be too much for this PSU.

Edited 16 hours ago by Shawn

[MLA]

Regarding you last question, I'm using GRHV in that role so I would say it's doable, but in addition to adjusting the current limiting resistor you need to put some protective measures in place; otherwise there is a good chance the SicFet will blow up during startup (I killed 4 before understanding the problem  ). 

See SimmConn's post for great advice: