(Solved): An NPN transistor is operating in active mode at room temperature as shown in the figure. Find the ...

An NPN transistor is operating in active mode at room temperature as shown in the figure. Find the sum of the resistors \( R_{B}+R_{C} \) in \( K \Omega_{1} \) if \( V_{C C}=9 V_{\text {, }} \) \( I C=1.8 \mathrm{~mA} \) and \( \mathrm{V}_{C E}=1 \mathrm{~V} \). BJT's \( \beta=125, \mathrm{~V}_{\mathrm{BE}}=0.7 \mathrm{~V} \) and the reverse saturation current \( \mathrm{I}_{\S}=5 \times 10^{-15} \mathrm{~A} \). Approximate your answers to 2 decimal point precision. Answer: