• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Anybody help identify these tubes

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Hi, I have been given some Toshiba tubes marked 5B they are 7 pin and come out of a Sony Tape recorder, I was also given a pair of output transformers for these (8ohm sec 2.5k primary).

I would like to build a small iPod amp for my daughter using these.
Can anybody help me with any technical info on the pinouts/specs?

Thanks


Dave
 
Tube 5B

Hi,
I can find some info in a Japanse tube book about Tube 5B (Electrons) Type : 2R+2R , Ef (V) 2,5 , If (A) 12 , Ep(V) 120
Ip (mA) 5A

I don't know what is 2R+2R ? ? ?

I suppose that "Electrons "is the make , it is not " Toshiba ".

Hope the above info helps...
 
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