1 NEW GU-84B = 4CX2500 TETRODE TUBE TESTED Original package US seller
USD 649.00 USD
Specifications
| Country Of Origin | Russian Federation |
| Brand | Soviet |
| Type | NOS Tube |
| Model | GU78B |
Zero anode current (at Ua=250V, Uc2=375V, Uc1=0V): 3.5-6A. Reverse current of the first grid (at Ua=1000V, Uc2=375V, Ia=2000mA): no more than 80uA. Glow current 3.4-4.0A. Second grid current (at Ua=750V, Uc2=375V, Ia=2000mA): 25 ± 60mA.
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