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Aug 31 '16 at 10:40 comment added LvW Because some people prefer the water analogy: Can somebody imagine that a change in the water flow of a small river would be able to change the water flow of a larger river WITH GAIN ? (Example: 1m³ per second (small river) causes a change of 100m³ per second (large river).
Aug 31 '16 at 7:09 comment added LvW The answer can be found in the link I have provided. Of course, the collector current is NOT controlled by the base current. It is the electrical field (determined by Vbe) that matters only.
Aug 30 '16 at 22:38 comment added 7VoltCrayon @LvW Can you point out whats wrong and which sentence is correct? That would be very helpful.
Aug 30 '16 at 7:39 comment added LvW To clarify better (in particular, the last paragraphs on page 1387): ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=775421
Aug 30 '16 at 4:18 comment added Doktor J To clarify: a small current applied to the base can control a larger current from collector to emitter; thus it "amplifies" your output (e.g. from an Arduino pin) to another device.
Aug 29 '16 at 17:20 history answered Peter Bennett CC BY-SA 3.0