Name: 45 Use: Glass tube type used in output stage of radio receivers. Notes: Requires a four-pin socket and should be mounted in vertical position. Horizontal operation is permissible if pins 1 and 4 are in vertical plane. |
45 Power Triode Data Source= R-10 & RC-15 Heater or Filament Voltage= 2.5 volts Heater or Filament Current= 1.5 amperes EIA Base= 4D Substitutes. . . . . . . . . None |
Capacitances and Design Maximum Values: C/in. . . . . . . . . . . . 5 pf C/out . . . . . . . . . . . 3 pf C/gp. . . . . . . . . . . . 8 pf Maximum Plate Voltage . . . 275 volts |
Typical Operation as a Receiving Tube Description Ep Eg Es Is Ip IpMax Rp TC AF Zl PO --------------------------------------------------------------------------- Class A Amplifier 275 -56 - - 36 - 1670 2100 3.5 4600 2 Class A Amplifier 250 -50 - - 34 - 1750 2000 3.5 3900 1.6 Class A Amplifier 180 -34.5 - - 27 - 1900 1850 3.5 3500 0.78 PP Class AB2 Amp 275 -68 - - 28 138 - - - 3200 18 PP Class AB2 Amp 275 775* - - 36 90 - - - 5060 12 * = Value of cathode bias resistor |