Explanation: The manufacturer specifies the SOAs only for single pulse DC operation & a particular temperature (usually 20Degree Centigrade Scale). For actual operations, The SOA’s have to be modified using the thermal impedance charts. 6. A device is operating at Ic = 4A & Vce = 50V. For the device to operate at Ic = 20A (Without damaging),
A. voltage should be increased
B. voltage should be reduced
C. voltage can be kept constant
D. current has to increased further
Answer:A
Explanation: The manufacturer specifies the SOAs only for single pulse DC operation & a particular temperature (usually 20Degree Centigrade Scale). For actual operations, The SOA’s have to be modified using the thermal impedance charts. 6. A device is operating at Ic = 4A & Vce = 50V. For the device to operate at Ic = 20A (Without damaging),
A. voltage should be increased B. voltage should be reduced C. voltage can be kept constant D. current has to increased further
Explanation: For safe operation, the values should be within the limits. P = V.I – with increase in one of the values, another value should decrease. 7. For a BJT, find the maximum power dissipation when the device is safely operated at Vce = 90V and Ic = 0.5A