EL5?

Obviously a Tungsram, because the only text is Made in Hungary. But a EL5?
Regards Mario Attachments:

• tungsram desconocida (86 KB)
• otra (97 KB)
• otra 2 (95 KB)

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Hello Mario,

it could be an EL5, an EL6 or even a fat EL3(N).
You can find out more by observing the heater current.

At 6.3 V heater voltage you will find:

EL3 = 0.9 A

EL5 = 1.35 A

EL6 = 1.2 A

 

Best Regards

Jacob

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Thanks Jacob!
Saludos
Mario

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