Well, the emitter bybass cap and resistors should set the low end corner at around 20Hz, but his data shows that the response was almost flat at that frequency. The results imply that the cap value is closer to 250uF, rather than 100uF.Hi Ron.H;
Since there are no bandwidth limiting components placed in that circuit, surely the cut-off will not occur until the input frequency is increased high enough to start the miller effect?
So, with that in mind, I will agree that he should have taken measurements at a much higher frequency but I'd suggest 20Hz was a more than adequate starting point?
Brian.
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