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Classification- It is a nine golden pins tube. Oxide coated cathode of indirect heated. It is a Twin triode.

 

Application -It intended for use a NF voltage amplifier or Phase inuerter. It is Low noise tube.

 

 

Dimensions -Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1, and 2.

Nominal operating conditions and parameters

Heater voltage ……………………………………………………………… 12.6V

Heater current ……………………………………………………………… 0.15A

Plate voltage ………………………………………………………………… 250V

Grid voltage ………………………………………………………………… -2V

Plate resistance …………………………………………………………… 62.5kohms

Plate current ………………………………………………………………… 1.2mA

Amplification factor …………………………………………………………… 100

 

Characteristics-Average characteristics

Figure 3. shown typical curves of plate currents of grid voltage for several values of plate voltages. It is alternating-current filament supply.

 

Limiting Operation Conditions for Safe Nor simultaneous ratings

Maximum plate voltage …………………………………………………………… 300 V

Maximum negative Grid voltage ………………………………………………… -50V

Maximum positive Grid voltage …………………………………………………… 0V

Maximum Power of plate ………………………………………………………… 1.0W