£¸£´£µ no dc passing the opt

[VanguardVillage]

Hello everyone,for the following schematic,is the 3.5k impendance too small for the 845?and what's the use of the 20H connect with the V+ and the plate of the 845? i thing the output power is nearly 15Watts,is that right? thanks !

 

[SY]

If you have to ask this, you shouldn't be handling 820V circuits with expensive parts. Best start on something less ambitious, then work your way up.