Vacuum Tube Rectifier Vacuum Tube 845-TII Collection Version for HiFi Audio Valve Electronic Tube Amplifier DIY Matched(4pcs Matched Quad)
The has good linearity low noise and good reliability
The tube is designed for service as power rectifiers in AC operated receivers which require high currents.
The service life longer and the failure rate greatly reduced.
The special with signal and has low noises output.
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Detail
electron tube
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------------------3 mA/V
ri--------------------1.7 K
u---------------------5
RL---------------------3.4 K
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 K
Ia------90 65 52 mA
Gm-----3.1 - - mA/V
Ug(pk)--- 110 148 V
ri------1.7 1.9 2.1 K
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 K
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
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Channels : 1
Model Number : 845-TII
Maximum Power Per Channel : NO POWER
Origin : Mainland China -
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