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330 bytes added ,  2 September 2018
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The Type 59 plug-in contains two tubes, total.
Both are [[6B8A]] pentode/triodes.
A triode cathode-follower buffers the input.
Next is a differential amplifier made of two pentodes.
The remaining triode is used as the trigger pickoff cathode-follower.
The heater of tubes are supplied with 6.3 V<sub>AC</sub> from the mainframe.
==Pictures==
==Pictures==
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