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cathode follower, buffering the trigger signal. | cathode follower, buffering the trigger signal. | ||
The trigger circuit is a [[6DJ8]] trigger amplifier followed by a 6DJ8 Schmitt trigger. | The trigger circuit is a [[6DJ8]] trigger amplifier followed by a 6DJ8 Schmitt trigger. | ||
Triggering can be from the internal pickoff or from | Triggering can be from the internal pickoff or from an external signal or "line" trigger, | ||
from a 6.3V tap on the power transformer. | from a 6.3V tap on the power transformer. | ||
The 533 contains a 128F [[thermal cutoff]]. | The 533 contains a 128F [[thermal cutoff]]. |