An engineer asked me for help when he encountered what appeared to be strange phenomenon while testing a prototype circuit in the system. He saw “mysterious” clipping distortion of the signal at the output of his emitter follower. He told me that he checked this follower with a much-heavier (smaller-value) resistive load than the actual load, but did not see any visible distortions. However, when he connected his prototyping board to the system, there was significant clipping of the signal at the bottom...
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