F1 V+ R 1 1000 B=20 Vsal R_2 700 V. Pnom = 20W ICmax(nom) = 1.5 A VCE (máx) = 80V Timax = 15,0°C

The characteristics of the transistor in figure F1 are:
Pnom= 20W
Icmax(nom) =1.5 A
VCE(max)=80V
Tjmax = 150 degrees celcius
to. Calculate Vcc(max) to operate at 45 C with a heat sink: 0e-s =2℃/W and 0s-a = 6℃/W
b. Value of R_1 and R_2 for the previous operating point.
c. It is desired that it can dissipate up to 60% of its Pnom, calculate the new heatsink 8s-a
d. Draw on the same plane: the power curve, the DC load line and indicate, in both cases, the
transistor operating point and the corresponding working power.