Good morning everyone,
I am a bit confused regarding the simple circuit I found in the book, maybe because I lost some important information long the way because I'm not a native speaker..
However, when the imput is low at the base of the first npn, the voltage across C1 is around 4.4 V, because on the left is at 5, on the right is about 0.6-0.7 due to the Q2 npn and that is obviously fine.
My question is why does the voltage at the second npn (Q2) becomes - 4.4V when the imput goes high at 5V?
Why not - 0.6V as the voltage across C1?
I even tried to simulate it a bit slower on ltSPICE but the result is quite similar.
Thank you,
I am a bit confused regarding the simple circuit I found in the book, maybe because I lost some important information long the way because I'm not a native speaker..
However, when the imput is low at the base of the first npn, the voltage across C1 is around 4.4 V, because on the left is at 5, on the right is about 0.6-0.7 due to the Q2 npn and that is obviously fine.
My question is why does the voltage at the second npn (Q2) becomes - 4.4V when the imput goes high at 5V?
Why not - 0.6V as the voltage across C1?
I even tried to simulate it a bit slower on ltSPICE but the result is quite similar.
Thank you,