PSVANE tube 845-TII vacuum MARKII 845 Original factory precision matching | Электроника

PSVANE tube 845-TII vacuum MARKII 845 Original factory precision matching | Электроника

PSVANE tube 845-TII vacuum tube MARKII tube 845 Original factory precision matching

845-TII

Filament heating

U f---------------------------------------10 V

If----------------------------------------3.25 A

Limit rating

Anode voltage----------------------------------1250 V

Anode dissipation power-----------------------------75 W

Output power at maximum signal--------------------------150 W

Maximum anode current -------------------------------120 mA;

Interelectrode capacitance

Input capacitance----------------------------------6 PF

Output capacitance----------------------------------4.5 PF

Trans-circuit capacitance----------------------------------14.5 PF

Static parameters

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 working status (reference value)

Single tube A1 zoom:

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 AB1 class zoom:

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