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1A4: Difference between revisions
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The signal path of each channel of the 1A4 is as follows. | The signal path of each channel of the 1A4 is as follows. | ||
First the signal passes through the attenuators. | First the signal passes through the attenuators. | ||
Then it is clamped by two diodes and applied to | Then it is clamped by two diodes and applied to the gate of a JFET source follower. | ||
The source of the source follower is the trigger pickoff point. | The source of the source follower is the trigger pickoff point. | ||
From there the vertical signal path goes through an NPN emitter follower | From there the vertical signal path goes through an NPN emitter follower | ||