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1 Philips Ultra Rare EL34 Nickelbase tube (102%) 1954
- Factory Code: 5t SYA
- flat ring + disc getter
- black metal base
- Eindhoven 1954
- second generation
- welded plates
- Yellow paint marked (special selected)
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 = 77mA (102%)
Gm = 11mA/V (100%)
- Date code
- 5tSYA
- Factory
- Eindhoven Holland
- Year of Manufacturing
- 1954
- Generation
- 2nd
- General availability
- Very Rare
- Condition
- Used (see test results)
- Label markings
- label still recognizable
- Tube 1 - Section 1: DC plate current in mA
- 77
- Tube 1 - Section 1: Mutual transconductance in uMhos
- 11
1 Item
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