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Philips EL34 Nickelbase tube (113%) 1956
- Factory Code: 56F SYO
- one piece disc getter
- welded plates
- dark brown metal base
- Eindhoven 1954
- second generation
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Testsettings:
settings: Va = 250V, Vs = 250V, Vg = -13.5V , Vh = 6.3 V
a good (NOS) tube test for: Gm = 11mA/V and Ia 75 mA
Testresults:
Tube 1 : Ia = 85mA (113%)
Gm = 11,2mA/V (101%)
- Date code
- 56F SYO
- Year of Manufacturing
- 1954
- Generation
- 2nd
- Label markings
- Good (some little scratches)
- Plate
- Welded
- Getter
- One piece disc
- Gold pins
- No
- Base
- dark brown metal
- Tube 1 - Section 1: DC plate current in mA
- 85 (113%)
- Tube 1 - Section 1: Mutual transconductance in uMhos
- 11200 (101%)
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