Intact Audio

Posted: **Wed May 10, 2006 3:13 pm**

here are the plots for a plate choke to be used in a direct coupled stacked supply amp where the voltage drop across the plate choke biases the output tube.

the DCR of the choke is 1720 ohms so if the driver runs 35ma the output tube will bias up at -60V

dave

Posted: **Fri May 12, 2006 4:24 pm**

a lower DCR was requested so here is a 1180 ohm version on the same core

Intact Audio

80% 50hy 35ma plate choke

80% 50hy 35ma plate choke