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555: Difference between revisions
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[[letter-series and 1-series plug-ins|letter-series or 1-series vertical plug-ins]] | [[letter-series and 1-series plug-ins|letter-series or 1-series vertical plug-ins]] | ||
== Type 21 and 22 Timebases == | |||
The 555 uses special horizontal plug-ins that contain the trigger and sweep. | The 555 uses special horizontal plug-ins that contain the trigger and sweep. | ||
Early instances of the 555 came with | Early instances of the 555 came with | ||
the 21 and 22 horizontal plug-ins. | the 21 and 22 horizontal plug-ins. | ||
== Type 21A and 22A Timebases == | |||
Later instances came with | Later instances came with | ||
the 21A and 22A horizontal plug-ins, | the 21A and 22A horizontal plug-ins, | ||
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The upper-beam sweep and lower-beam sweeps are, in fact, totally independent. | The upper-beam sweep and lower-beam sweeps are, in fact, totally independent. | ||
== Filament Supply Regulator == | |||
Regulation of the filament supply happens as follows: | Regulation of the filament supply happens as follows: | ||
There is a feedback loop that is formed between the indicator | There is a feedback loop that is formed between the indicator | ||
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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. | ||
== Vertical Amplifier == | |||
The 555 has a six-section differential | The 555 has a six-section differential | ||
[[distributed amplifier|distributed vertical output amplifier]] | [[distributed amplifier|distributed vertical output amplifier]] | ||