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Original Message

RE: Dave...

Posted by cpotl on June 14, 2021 at 07:38:08:

I don't think it a question of "cheap shots" or anything like that at all.

Personally, I have an extremely high opinion of John Broskie, and I love the clarity and the precision of his articles. They are also very pedagogical, which is great.

Anyone can make the occasional mistake, though, and it is not at all a "cheap shot" to draw attention to the very exceptional slip-up if it occurs.

As I said, I like the clear and pedagogical style of his articles. But in an article on the long-tailed pair, the key pedagogical distinction to be made between the case of a cathode resistor connected to a negative voltage source, versus the case of the CCS, is that in the former one needs unequal anode resistors whereas in the latter case the anode resistors should be equal. One could certainly go on, after having made this clear pedagogical point, to discuss what happens when the CCS is not giving a truly constant current. But it just doesn't seem to fit with his usual clear style of writing for him to be assuming when he first introduces the CCS that it isn't a true CCS.