Question: For the circuit shown below: AC input = 1 2 0 V m m , 6 0 H z . Transfor mer Ratio = 1

For the circuit shown below:
AC input =120Vmm,60Hz. Transfor mer Ratio =12:1. Reference Voltage =8.7V. R load =51Ohms. Ambient temperature =60 degrees C Transistor is a MP31. There is no heatsink on the transistor.
What percentage of the maximum allowable junction temperature (Tj) of the TIP31 is the junction temperature of this circuit using?
A
For the circuit shown below: AC input = 1 2 0 V m

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