Transistor Switch Conditions

Rarely Tested

Cutoff: $$ I_B = 0 $$ β†’ $$ I_C \approx 0 $$ (open switch)
Saturation: $$ I_B \geq \frac{I_{C,\mathrm{sat}}}{\beta} $$ β†’ $$ V_{CE} \approx 0.2 \mathrm{ V} $$ (closed switch)

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