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Shuguang Kt66 new Hi-Fi tubes

Shuguang Kt66 new Hi-Fi tubes Shuguang Kt66 new Hi-Fi tubes Shuguang Kt66 new Hi-Fi tubes
Product name:Shuguang Kt66 new Hi-Fi tubes
Item:SG-Kt66
Price:20
Details:
 
about this tube 
     The auction is for one tube.

KT66 Series

Beam power tube KT66's anticathode limit dissipation power is 25W. In audio frequency amplifier, it is used to amplify A1 series, AB1 series and AB2 series.

 

 

 
 

heater heating
UH………………………6.3 V
IH………………………1.27 A

limit rating
quadrode connect  tridoes connect
plate voltage………………500 ---400 V
plate dissipation power………… 25 ---25--W
second grid voltage…………400 -------V
second grid dissipation power……3.5 -------V
cathodecurrent………………200--------mA
heater voltage between cathodes… ±100------ V
first grid resistance
when it is fixup partial voltage…………0.1 MΩ
when it is self-partial voltage……………0.5 MΩ

capacitance between poles
-------------quadrode connect  tridoes connect
input capacitance…………… 16 -----8.7 -PF
output capacitance……………11.5 ----15.8 PF
transroute capacitance…………… 1.1 ----7.2 -PF

static state parameter
Ua……………………………250 V
Ug2………………………… 250 V
-Ug1………………………… 15 V
Ia…………………………… 85 mA
Ig2………………………… 6.3 mA
Gm……………………………6.3 mA/V
ri……………………………22.5 kΩ
RL……………………………2.2 kΩ
Pout…………………………7.25 W
Dtot………………………… 9.0 %

 

 



commend working state(reference value)
driving A1 amplify(auto-partial voltage)
Ua…………………… 390 250 V
Ug2………………… 275 250 V
-Ug1………………… 22.5 17.5 V
Rk(pcr tube) …… 500 200 Ω
RL(a-a) …………… 8 4 kΩ
?(g1-g1.pk) ………70 36 V
Ia(0) …………… 2×52 2×81 mA
Ia(max.sig) …… 2×62.5 2×82.5 mA
Ig2(0) …………… 2×2.5 2×6 mA
Pout………………… 30 17 W
Dtot………………… 6 4 %

driving AB1 amplify,super line connect
----fixuppartial voltage auto-partial voltage
Ua…………………552 ---450 V
Ug2……………… 525 ---425 V
-Ug1……………… 67--- 35 V
Rk(pcr tube) … - ----560 Ω
RL(a-a) ………… 8 -----7 kΩ
?(g1-g1.pk) ……127---- - V
Ia+g2(0) …………2×35- 2×62.5 mA
Ia+g2(max.sig) …2×80- 2×72.5 mA
Pout………………… 50 -----32 W
Dtot………………… 3------ 2 %

 

 

 

driving AB2 series amplify(fixuppartial voltage)
----------------Zero.sig Max.Sig
Ua………………………510 ----475 V
Ug2…………………… 395 ----360 V
-Ug1……………………40 -----40 V
RL(a-a) ……………… 5 -----5 kΩ
?(g1-g1.pk) ………… - -----80 V
Ia(0) ……………… 2×40---- - mA
Ia(max.sig) ………… - ----2×88 mA
Ig2(max.sig) ………… - ----2×9.5 mA
Pout …………………… - -----50 W
Dtot …………………… - -----5 %

single tube A1 amplify tridoes connect
Ua.g2 ………………… 400 250 V
-Ug1 ………………… 38 19 V
Rk(pcr tube) ………600 315 Ω
RL………………………4.5 2.75 kΩ
Ia(0) …………………63 60 mA
Gm………………………5.5 - mA/V
ri………………………14.5 - kΩ
Pout……………………5.8 2.2 W
Dtot…………………… 7 --6 %

driving A1 amplify tridoes connect
Ua.g2……………………400 250 V
-Ug1…………………… 38 20 V
Rk(pcr tube) …………600 360 Ω
RL…………………………4 2.5 kΩ
Ia(0) ……………… 2×62.5 2×55 mA
?(g1-g1.pk) ……………80 40 V
Pout…………………… 14.5 4.5 W
Dtot………………………3.5 4.5 %

 

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