Psvane 845-HiFi Series, matched pair

Psvane  845-HiFi  Series
 
manufacturer specification:
 
Heater
Uf---------------------------------------10 V
If----------------------------------------3.25 A
 
Maximum Rating
Ua----------------------------------1250 V
Pa-------------------------------------75 W
Pout(max.sig)--------------------150 W
Ia(max)----------------------------120 mA
 
Direct Interelectrode Capacitances
 
input----------------------------------6 PF
output------------------------------4.5 PF
grid to plate---------------------14.5 PF
 
Static parameter
Ua--------------------------------------1250 V
—Ug-------------------------------------200 V
Ia---------------------------------------80 mA
Gm--------------------------------------3 mA/V
ri----------------------------------------1.7 KΩ
u----------------------------------------5
RL---------------------------------------3.4 KΩ
Ug(pk)------------------------------------69 V
Pout-------------------------------------15 W
 
Recommended Operating Conditions, reference value
class A1 .single tube：
Ua-----1000 1000 1250 V
—Ug--- 145 155 209 V
RL-----6 9 16 KΩ
Ia------90 65 52 mA
Gm-----3.1 — — mA/V
Ug(pk)--— 110 148 V
ri------1.7 1.9 2.1 KΩ
Pout----24 21 24 W
 
Push-pull.class AB1：
Ua------------------ 800 1000 1000 1250 V
—Ug---------------- 125 170 175 225 V
RL-------------------- 4.5 4.6 4.6 6.6 KΩ
Ia--------------------80 70 40 40 mA
Ug(pk)----------------177 240 — — V
Ia（mAx.sig）-----170 230 230 240 mA
Pout---------------------40 75 75 115 W