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805-THits:1550
Time:2019-08-30 15:34:00 |
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805-T is direct-heated type thorium tungsten cathode triode, can be used as class B, A - F, 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
Maxinmum 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) for two tubes:
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