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KT 88 - (6550) 22
KT 88
A. F. BEAM PENTODE
Base: OCTAL
Uf = 6,3 V
If = ca 1,6 A
Typical characteristic:
Ua = 250 V Ug2 = 250 V
Ia = 140 mA Ig2 = max. 7 mA -Ug1 = 15 V S = 11,5 mA/V
Ri = 12 kΩ µ-g1-g2 = 8
Triode Conncected
Ua, g2 Ia+g2 -Ug1
S
= 250 V = 147 mA = 15 V = 12 mA/V
Ri = 670 Ω µ =8
Dimension and connections:
Limiting values: Ua = 800 V Ug2 = 600 V
Ua, g2 = 600 V -Ug1 = 200 V Wa = 42 W Wg2 = 8 W Wa-g2 = 46 W
Ik = 230 mA Uk/f = 250 V Rg1-k (catode bias) Wa+g2≤35 W 470 kΩ Wa+g2>35 W 270 kΩ Rg1-k (fixed bias) Wa-g2≤35 W 220 kΩ Wa+g2>35 W 100 kΩ Capacitances:
cg1 = 16,5 pF
ca = 10 pF
cg1-a = 2,3 pF
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KT88 Datasheet
