NEW 1Matched Pair New Tested HiFi 805A (805)Psvane Vacuum Tube For
Tube Amp Stereo Vacuum Tubes
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
