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T-010 Matched Pair Quad PSVANE Vacuum Tube KT88 Replace 6550 for Hifi Audio Vintage Tube Amplifier DIY Tested by factory
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Meo wig Trading Co., Ltd
China - Hangzhou
Manufacturer
Trade Capacity
Export Percentage
Nearest Port
Hangzhou,Shanghai
Accepted Delivery Terms
Employees
51-100 people
Accepted Payment Currency
USD,CNY
Average Lead Time
45 Day(s)
Certifications
BRC
Product Specifications
--Product 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,they can be replaced by each other.
UH 6.3 V
IH 1.6 A
Maximum Rating
------------- --KT94 KT100 KT94 KT100
Ua 800 800 800 800 V
Ug2 600 600 600 600 V
Ug1-200 -200 -200 -200 V
Pa 42 45 35 40 W
Pg2 8 8 6 6 W
Pa+g2 46 49 40 45 W
Ik 230 230 230 230 mA
Uh-k 200 200 250 250 V
Tbulb 250 250 250 250 C
Rg1
with cathode bias
--- ---Pa + Pg2 35W 0.47 M
--- ---Pa +Pg2 > 35W 0.27 M
with fixed bias
--- ---Pa +Pg235W 0.22 M
--- ---Pa +Pg2> 35W 0.10 M
Direct Interelectrode Capacitances
--- - - --triode connection and tetrode connection
input 16--- -9.3 PF
output 12 --- -17 PF
grid to plate 1.2 ----7.9 P
Static parameter
tetrode connection
Ua250V
Ug2 250V
a 140mA
Ig2(approx) 3mA
-Ug1(approx)15V
Gm 12mA/V
ri 12K
g1-g2 8
triode connection
Ua.g2250V
Ia+g2143mA
-Ug1(approx) 15V
Gm12mA/V
ri6708
Series KT88 KT94 KT100
KT88-978
Recommended Operating Conditionsreference value)
Push-pull.classAB1.cathode bias.triode connection.
Ua.g2(b)400 485 V
Ua.g2(O)349 422 V
Ia+g2(0)276 294 mA
Ig+Ig2(max.sig)280 2101mA
RL(a-a)4 4 K
-Ug(approx) 40 50 V
Pout 17 31 W
Dtot 1.5 1.5 %
Pa.g2(0) 226.5 240W
Pa.g2(max.sig)19 227 W
Rk2525 2525
g1-g1.pk 78 114 V
Zout 2 1.9 K
Push-pull.classAB1.cathode bias.tetrode connection.
Ua(b)560 V
Ua(0)521 V
Ug2 300 V
Ia(o)264 mA
Ia(max.sig)273 mA
Ig2(0)21.7 mA
Ig2(max.sig) 29 mA
RL(a-a) 9 k
Rk2460
-Ug1(approx)30 V
Pout50 W
Dtot3 %
Pa(0) 233 W
Pa(max.sig) 228 W
Pa2(0) 20.5 W
Pg2(max.sig) 20.7 W
?(g1-g1.pk) 60 V
KT100
Push-full.class AB1.fixed bias.ultra-linear connection.
40%tapping points
U a.g2(b)560 460 V
Ua.g2(0)553 453 V
Ia+g2(0)250 250mA
Ia+g2(max.sig) 2157 2140mA
RLa-a 4.5 4 K
-Ug1(approx) 75 59 V
Pout 100 70 W
Dtot 2 2 %
Pa+g2(0)227.5 227.5W
Pa+g2(max.sig)233 227 W
g1-g1.pk140 114 V
Zout 7 6.5 K
Push-full.class AB1.cathode bias.ultra-linear connection.
(40% tapping points)
Ua.g2(b) 500 375 V
Ua.g2(0) 436 328 V
Ia+g2(0) 287 287 mA
Ia+g2(max.sig) 299 296 mA
RL(a-a) 6 5 k
Rk2600 2400
-Ug1(approx) 52 35 V
Pout50 30 W
Dtot 1.5 1.0 %
Pa+g2(0) 238 228.5 W
Pa+g2(max.sig) 217 216 W
?(g1-g1.pk) 104 71 V
Zout 4.8 4.5 k
Push-full.class AB1.fixed bias.tetrode connection.
Ua(b) 560 V
Ua(0) 552 V
Ug2 300 V
Ia(0) 260 mA
Ia(max.sig) 2145 mA
Ig2(0) 21.7 mA
RL(a-a) 4.5 k
-Ug1(approx) 34 V
Pout100 W
Dtot 2.5 %
Pa(0) 233 W
Pa(max.sig) 228 W
Pg2(0) 20.5 W
Pg2(max.sig) 24.5 W
?(g1-g1.pk) 67 V
Heater
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