The latest export type of dawn of electronic tube 805 FU-5 factory direct sales

Filament heating

Uf.............................. 10 V

If.............................. 3.25 A

Pole capacitance

Input capacitance........................ 8.5 PF

Output capacitance........................ 10.5 PF

Cross road capacity........................ 6.5 PF

Limit rating

Anode voltage........................ 1500 V

Anode dissipation power.................. 125 W

Working frequency and anode voltage

When the operating frequency is above 30MC, the anode voltage and the anode input power will be lowered in due time:



Frequency (MC) anode voltage and anode input power

B electrode C level telephone anode modulation telegraph

100% 30100%

82% 4590%

55% 8071%

Recommended working status (reference value)

B class A-F power amplifier (two tube) limit value

Ua........................... 125015001500 V

Ia (tube max.sig.per)............... 210 mA

Pa (in) (tube max.sig.per) z...... 315 W

Pa (tube per)........................... 125 W

Ug.......................................... -16 V

G (PK)..................... 235280 V

Ia (0)........................ 14884 mA

Ia (max.sig)............... 500600 mA

Pd.............................. 67 W

RL (A-A)........................ 8.2 6.7 K

Pout (max.sig)............ 300370 W

B class R-F power amplifier

(the maximum modulation factor is 1)

Limit value

Ua.................. 125015001500 V

Ug.............................. -10 V

Ia.................. 135115150 mA

Pa (in).......................................... 185 W

G (PK)............ 7070 V

Ig.................. 1515 mA

Pd.................. 117.5 W

Pout............... 5557.5 W

C class R-F power amplification and oscillation (anode modulation)

(the maximum modulation factor is 1)

Limit value

Ua.................. 100012501250 V

Ug.................. -160 -500 V -155

Ia.................. 160160175 mA

Ig.................. 606070 mA

Pa (in).......................................... 220 W

Pa................................................ 85 W

G (PK)............ 295300 V

Pd.................. 1616 W

Pout............... 110140 W