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205F Western Electric NOS in original box with data sheet (452=1954) (37ma) (tested on Amplitrex) (High Ma and Gm)

205F Western Electric NOS in original box with data sheet (452=1954) (37ma) (tested on Amplitrex) (High Ma and Gm)

$ 499.99

1 tube) 205F Western Electric NOS in original box with data sheet (452=1954) very good condition

37ma

Gm=2000

 

Tested on Amplitrex

Vplate=350V

Vgrid=-20V

NOS Ma = 35ma

NOS Gm = 1800

 

General Information

(205F "FAST" = Quick Heating Filament)

Operating Characteristics when used as Amplifier:
Filament Current (maximum): 1.6A
Filament Voltage: 4.3V - 5V
Plate Voltage: 200V - 350V
Grid Voltage: -10V to -25V
Plate Current: 17 - 25 Ma
Zout: 3 - 4 Kohms
Mu: 6 - 7.5
Transconductance = 2000
Maximum Continuous Plate Watts: 5W

 

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