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321: Difference between revisions
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Early instances of the 321 (sn pre-720) use a | Early instances of the 321 (sn pre-720) use a | ||
[[5718]] peanut tube as the front-end cathode follower. | [[5718]] peanut tube as the front-end cathode follower. | ||
Later 321 and 321A use a [[7586]] Nuvistor for that role. Latest 321A use a FET | Later 321 and 321A use a [[7586]] Nuvistor for that role. Latest 321A use a FET [[151-1011]]. | ||
In several circuits, the 321 uses [[OC170]] transistors | In several circuits, the 321 uses [[OC170]] transistors | ||
where the 321A uses [[2N2207]] transistors. | where the 321A uses [[2N2207]] transistors. | ||