12AV5-GA

      The 12AV5-GA is a beam pentode designed primarily for use as the horizontal-deflection amplifier in television receivership. The tube exhibits high perveance,high plate current at low plate and screen voltage,and a high ratio of plate to screen current.The 12AV5-GA whichfeatures a controlled heater warm-up characteristic,is especially suited for use in television receivers with series-connected heaters.
      The following is the eletrical characteristic of 12AV5-GA. The heater voltage (AC or DC) is 12.6 Voltage. The heater current is 0.6 A.The heater warm-up time is 11 second.Then is about the direct interelectrode capacitance (approximate).For the grid-number 1 to plate is bound is 0.5f,for the input is 14f and for the output is 7.0f.Then is about the maximum rating.The DC plate-supply voltage (boost +DC power supply) is about 550 V.The peak positive pulse plate voltage is 5500 V.The peak negative pulse plate voltage is 1250 V.The screen voltage is 175 V.The peak negative grid-number 1 voltage is 300 V.The plate dissipation is 11 W.The screen dissipation is 2.5 W.The DC cathode current is 110 mA.The peak cathode current is 400 mA. The grid-number 1 circuit resistance is 0.47 megaohms.The bulb temperature at hottest point is 210.Next is about the average characteristic. The typical plate voltage is 250 V.The typical screen voltage is 150 V.The typical grid-number 1 voltage is 250 V.The typical screen voltage is -22.5 V.The typical plate resistance is 14500 ohms.The typical transconductance is e4500 Ohms.The typical plate current is 57 mA.The typical screen current is 2.1 mA.The typical triode amplification factor is 4.3.