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Transistor Voltage Inverter? Answered

I am a newbie and was hoping someone could assist me. Given the following schematic which takes a voltage of 12v and considers it off and a voltage of 2 volts and considers it on can someone tell me what changes would need to take place regarding capacitors and resistors (if any) to account for 20v instead of 12v? Meaning that when 20v is considered off and 2v is considered on.


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5 years ago

The circuit isn't complete. There has to be a load on Q2 collector. That can be connected at one end to 20V