modified 2 years ago

（Saturation region）npn Bipolar Transistor

00:46:02

Saturation region

The voltmeter voltage is controlled by the independent current source.

If the resistor is 15kohm, ammeter Ic != B*Ib. More precisely Vb > Ve (forward biased) and Vb > Vc (forward biased).

Vb = Ic * Rc
       = 1mA * 15kohm
       = 15V (>10V)

Vce = Vc - Vb
       = 10V - 15V
       = -5V (rejected)

Ic = V / R
    = 10V / 15kohm 
    = 0.667mA

That's it, 10V input (independent voltage source) = 0V output (voltmeter) with Ic 0.667mA.

Notice: 
1. Bad value: B = 100.
2. 139mV is very small voltage (=0V).

published 2 years ago

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