Use:
Glass type used as voltage amplifier or detector in ac-operated receivers.
Notes: Requires five-pin socket.
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Name: 27 Use: Glass type used as voltage amplifier or detector in ac-operated receivers. Notes: Requires five-pin socket. |
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27 Medium Mu Triode Data Source. . . . . . . . . R-10 & RC-15 Heater or Filament Voltage . 2.5 volts Heater or Filament Current . 1.75 amperes EIA Base . . . . . . . . . . 5A Substitutes. . . . . . . . . 56 This tube is very similar to the 76 |
Capacitances and Design Maximum Values Cin. . . . . . . . . . . . 3.5 pf Cout . . . . . . . . . . . 3.0 pf Cgp. . . . . . . . . . . . 3.3 pf Maximum Plate Voltage. . . 250 volts |
Typical Operationas a Receiving Tube: Description Ep Eg Es Is Ip Rp TC AF Zl PO ------------------------------------------------------------------------- Class A Amplifier 250 -21 - - 5.2 9250 975 9 - - Class A Amplifier 180 -13.5 - - 5.0 9000 1000 9 - - Class A Amplifier 135 -9 - - 4.5 9000 1000 9 - - Class A Amplifier 90 -6 - - 2.7 11000 820 9 - - |