You oughta get into the Guinevere project on the Group Build forum. I think you'd really enjoy it. Interested?

And by the way, Bill Wassilak announced he's having the next GPAC meeting at his house on the 5th. See you there?

Wayne

-akhilesh

Good sound is easy. Four triodes, two or them low mu power valves like 2A3, a good OPT. With some careful design, and implementation, we can make the leap to excellent. We could just as easily start with EL34, 1619, 807 or 13E1...
regards,
Douglas

IN the standard transformer coupling, single ended situation, the major disadvantage of the method is the average DC current that flows in the circuit must be supported by the transformer, making the transformer relatively large so that it does not saturate due to the DC only. This is probably the most common output coupling method, as it is relatively simple. At quiescent conditions, the power supply voltage appears on the plate (minus a little loss due to the IR loss in the transformer. During signal conditions, the output swings above and below the supply voltage.
akhilesh

• http://members.aol.com/sbench/outstru.html

Don't forget it could be a simple resistor, or an itty-bitty CCS... (I like the sound of the resistor-loaded version best. Yeah, they'll both need more HT.)

TC