TII-Series: Positioning in exceeding totally, not only exceed all the same types of productions that always been imitating on the market, but also to exceed itself.
845-TII is direct-heated type thorium tungsten cathode triode, class A1 and AB1
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-------------------------------------- 3mA/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
