| 1. | The pentode preamp tube is a 5879 with EL84 output tubes.
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| 2. | Valve preamplifiers use triodes or low-noise pentodes ( EF86 ).
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| 3. | A pentode is an electronic device having five active electrodes.
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| 4. | Ultra high reliability pentode for use in submarine communications cable repeaters
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| 5. | This three-grid tube is called a pentode, meaning five electrodes.
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| 6. | It employed a single pentode vacuum tube and could register only twofold coincidences.
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| 7. | Some tubes described as pentodes are actually beam tetrodes.
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| 8. | In 1926, he ( and Gilles Holst ) invented the pentode vacuum tube.
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| 9. | A MHz response could be achieved with two pentodes and six diodes per cell.
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| 10. | A pentode has an additional suppressor grid ( g3 ) to eliminate the tetrode kink.
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