Just wondering: I divided a voltage of 40V with 56k and 1k to a voltage, where a BC547C turns on and gives a signal, to stop giving more voltage through a Buck Converter. Nothing realy interesting happening here.
5V
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40V Collector
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| 10k
56k |_______some other circuits
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|_____100k____Base
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1k |
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GND____________Emitter
I hope, it does show correctly.
The Problem is, that I don't know, what exactly will happen, outside of the simulation. There is the problem, that I have to replace the 56k resistor with a 100k poti, because the diode BE neveris identical, right? Also, what happens, if the Temperature changes? Will that change the circuit much aswell? If so, does it mean, that I have to replace that part of the circuit with some kind of discrete OpAmp, to make the voltage control stable?