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would remain cold without filament power, and would not pass any current. | would remain cold without filament power, and would not pass any current. | ||
The 555 has a six-section differential distributed vertical output amplifier | The 555 has a six-section differential | ||
[[distributed amplifier|distributed vertical output amplifier]] | |||
made of [[6DK6]] tubes. It is the same as the vertical output amplifier in | made of [[6DK6]] tubes. It is the same as the vertical output amplifier in | ||
the [[551]] and the [[545|545A]]. An L-C [[delay line]] is between | the [[551]] and the [[545|545A]]. An L-C [[delay line]] is between |