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1pc Vacuum Tube HiFi Original Type Audio Vacuum Tubes for Amplifiers KT88
Description:
KT88 is a beam power tetreode, its anode limited dissipation power is 42W. In the audio amplifier, the power can be 100W when it is used as push-pull class AB1 with double tubes, it can also be used in electronic voltage regulator circuit. KT88 is similar with CV5220 and 6550, so they can be replaced by each other.
Features:
★ Made of anode materials of the highest purity grade in the world
★Using British high-density filament material
★ Unique cathode core manufacturing process
★Using ultrasonically treated gold-plated sockets
★ All hand-made by experienced technicians with more than 20 years of experience
Hot Wire Heating:
UH............ 6.3 V
IH............ 1.6 A
Limit Rating:
------------- --KT94 KT100 KT94 KT100
Anode voltage.................. 800 800 800 800 V
Second gate voltage......... 600 600 600 600 V
First gate voltage............-200 -200 -200 -200 V
Anode dissipated power............ 42 45 35 40 W
Second gate dissipation power... 8 8 6 6 W
Anode plus second gate dissipated power... 46 49 40 45 W
Cathode current.................. 230 230 230 230 mA
Hot wire cathode voltage......... 200 200 250 250 V
Glass bulb temperature.................. 250 250 250 250 C
First gate Resistance:
Self-biased
--- ---Pa + Pg2≤ 35W 0.47 MΩ
--- ---Pa +Pg2 > 35W 0.27 MΩ
Fixed Bias:
--- ---Pa +Pg2≤35W 0.22 MΩ
--- ---Pa +Pg2> 35W 0.10 MΩ
Interelectrode Capacitance:
--- - - -- Quadrupole connection triode connection
Input capacitance......... 16--- -9.3 PF
Output capacitance......... 12 --- -17 PF
Cross-channel capacitance.........1.2 ----7.9 PF
Static Parameters:
Quadrupole connection
Ua.....................250V
Ug2.................. 250V
a..................... 140mA
Ig2(approx)... 3mA
-Ug1(approx)......15V
Gm..................... 12mA/V
Ri .....................12KΩ
Gg1-g2............... 8
Triode Connection:
Ua.g2...............250V
Ia+g2...............143mA
-Ug1(approx)... 15V
Gm.....................12mA/V
Ri.....................670Ω
μ..................... 8
Package Included:
- 1 x KT88 Vacuum Tube
