Figure shows an SCR used in a circuit to provide variable electrical power to a resistive load from a high-power square-wave generator. The SCR trigger voltage is 2.5 V.
a. What is the range of R to provide 5% to 95% on time of the SCR?
b. Plot the voltages across the capacitor, load, and SCR for a 50% on time.
c. What is the average power delivery to the load at 50%?
