Generator lamp tetrode GU-91B is designed to generate high-frequency oscillations and amplify power in stationary radio engineering devices of wide application.

1. Heating voltage (~ or =) 12.6 V.
2. Glow current 4.1-4.7 A.
3. Anode voltage 1600 V.
4. The voltage of the second grid is 350 V.
5. Bias voltage negative, absolute value (at anode current 1000 mA, anode voltage 1600 V, second grid voltage 350 V) 20-55 V.
6. Negative closing voltage, absolute value (at anode voltage 2000 V, second grid voltage 350 V, anode current 20 mA), not more than 130 V.
7. Second grid current (at anode current 1000 mA, anode voltage 1600 V, second grid voltage 350 V), -25-+ 10 mA.
8. Zero anode current, not less than 2.7 A.
9. Slope of characteristic (at anode current 1000 mA, anode voltage 1600 V, second grid voltage 350 V) 30-65 mA/V.
10. The highest frequency is 250 MHz.

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For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.