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Psvane / Hi-Fi Series / 805A
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Psvane / Hi-Fi Series / 805A

Hi-Fi Series: classic style, exquisite craft, comprehensive and balanced sound performance, largest sales volume over the world, best choice for you .

805A  is direct-heated type thorium tungsten cathode triode, can be used as class B, A-F, and R-F power amplification, class C R-F power amplification and high frequency oscillation.

Heater
Uf————————————–10 V
If—————————————3.25 A

Direct Interelectrode Capacitances
input———————————-8.5 PF
output———————————-10.5 PF
grid to plate———————————6.5 PF

Maximum Rating
Ua———————————1500 V
Pa—————————–125 W


Recommended Operating Conditions (reference value)

class B(A-F) for two tubes
typical working condition    limited parameter 
Ua—————— 1250 1500 1250 V
Ia (mAx.sig per tube)——————- 210 mA
Pa (in) (mAx.sig per tube)————— 315 W
Pa (per t —————————- 125 W
Ug———————————-—16 V
Ug(pk)—————-235 280 V
Ia (0)—————–148 84 mA
Ia(mAx.sig)———-500 600 mA
Pd(mAx.sig)————6 7 W
RL(a—a)—————6.7 8.2 KΩ
Pout(mAx.sig)———–300 370 W

class B(R-F):
Carrier conditions the biggest modulation coefficient is 1 per tube

typical working condition    limited parameter 
Ua—————— 1250 1500 1500 V
Ug———————————-—10 V
Ia ——————-135 115 150 mA
Pa (in) ——————————185 W
Pa ———————————125 W
Ug(pk)—————-70 70 V
Ig ——————-15 15 mA
Pd——————-11 7.5 W
Pout——————55 57.5 W