1. :It's probably because it's really a multiple of a base voltage . 2. The emitter base junction is unchanged because the emitter base voltage is the same. 3. As this base voltage increases, current begins to flow in the collector of Q1. 4. V base1 and V base2 are the base voltages on sides 1 and 2. 5. Computer models such as those used in SPICE use the collector base voltage " V" 6. Some models base the collector current correction factor on the collector base voltage " V" 7. Its collector-base voltage is zero as shown. 8. The R 1-R 2 voltage divider conveys this change to the Q2 base voltage and it begins conducting. 9. Typically, the collector voltage will be higher than the base voltage , and Schottky diode will be reverse biased. 10. Its collector voltage goes down and Q2 begins going cut-off, because the voltage divider now provides lower Q2 base voltage .
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