Hello,
I am getting stuck on the determining Rth and Eth in the red section of the circuit.
I tried to calculate Rth, Eth by Thevenin's Theorem but I cann't get result.I am confused if I need to replace transistor by transistor equivalent model.
I have tried the following way:
In the base-emiter loop of figure 1:
Vcc = Ib.Rb + Vbe+ (β + 1) Re
and then I have the circuit like firgure 2.
Can I conclude Rth= (β + 1) Re, Eth= Vbe ?
Could anyone help me?
I am getting stuck on the determining Rth and Eth in the red section of the circuit.
I tried to calculate Rth, Eth by Thevenin's Theorem but I cann't get result.I am confused if I need to replace transistor by transistor equivalent model.
I have tried the following way:
In the base-emiter loop of figure 1:
Vcc = Ib.Rb + Vbe+ (β + 1) Re
and then I have the circuit like firgure 2.
Can I conclude Rth= (β + 1) Re, Eth= Vbe ?
Could anyone help me?
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