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Calculating the power in the load of a thyristor circuit

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For the given circuit, calculate the power in the load as a percentage of maximum power using the given formula, for a firing angle of 45 degrees.

Please refer to the attachment for the circuit and the formula.

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Solution Summary

Using a set formula for the RMS Voltage produced by a thyristor the ratio of the power dissipated to the maximum power that can be dissipated is determined based on a firing angle of 45 degrees.

Solution Preview

Assuming that the given formula is for the voltage developed over the load, we should proceed as follows.

For firing angle of theta = 45 deg

Sin(2*theta) = Sin(2 x 45)

Sin(2*theta) = Sin(90) = 1

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