Globe-type bulb of glass, a white ceramic base with four-prong bayonet golden pins, oxide coated filamentary, solid plate or mesh plate triolde.

Application -Voice frequency and carrier-frequency amplifier. Other applications where small power output are required.

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

TJ Fullmusic 101D DIY Hifi Supply


Nominal operating conditions and parameters 


Nominal filament current : 1.0A

Plate voltage : 160V

Grid voltage : -12V

Plate resistance : 5.3kohms

Plate current : 9.9mA

Amplification factor : 6.2

*Direct-current filament supply is used. The grid and platter returns are connected to the negative end of the filament.

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.


TJ Fullmusic 101D DIY Hifi Supply

Fig 3

Limiting Operation Conditions for Safe Nor simultaneous ratings 

Maximum plate voltage : 190 volts

Maximum plate current : 15mA