845-TII Tube Amplifier Kit DIY Tube Amplifier(4pcs Matched Quad)
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Detail
Preamps
845-TII
Filament Heating
Voltage frequency---------------------------------------10V
If ---------------------------------------- 3.25 A
Final Rating
Anode voltage----------------------------------------------------------------
Anode dissipation power------------------------------------------------------------------------------
Output power at maximum signal: 150 W
Maximum anode current------------------------------120 mA;
Interelectrode capacitance
Input capacitance--------------------------------6 PF
Output Capacitor ---------------------------------4.5 PF
Cross Capacitance-----------------------------------------------------------------
Static parameters
Ua----------------------------------------1250V
-Ug------------------------------------------------200V
Ia------------------------------------------------80 mA
Gm--------------------------------------3 mA/V
Li----------------------------------------------------1.7 K
You----------------------------------------------------------------5
RL---------------------------------------------3.4 K
Ug(pk)--------------------------------69 V
Pout-------------------------------------15 W
Recommended working status (reference value)
Single tube A1 amplification:
Voltage source ———— 1000 1000 1250 volts
-Ug--- 145 155 209 V
RL-----6 9 16 K
Current------90 65 52 mA
Transconductance -----3.1 - - mA/V
Peak voltage --- 110 148 V
Mileage------1.7 1.9 2.1 K
Pout----24 21 24 W
Push-Pull AB1 Amplifier:
Ua----------------- 800 1000 1000 1250 V
-Ug---------------- 125 170 175 225 volts
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
Model: 845-TII
Maximum power per channel: No power supply
Origin: Mainland China
Certification: CE
Product Type: Vacuum tube, electron tube
Replaces: 845 A845 E-845 845-DG 845-T 845-TA
Application: tube amplifier, HIFI amplifier, DIY audio amplifier accessories
Note: pairing -
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