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To find the maximum value of the gate current ( I_g ) for safe operation of the SCR, we can use the formula for power dissipation:
[
P = V_g times I_g
]
Where:
– ( P ) is the power dissipation (0.5 Watts),
– ( V_g ) is the gate voltage (10 V),
– ( I_g ) is the gate current.
Rearranging the formula to solve for ( I_g ):
[
I_g = frac{P}{V_g}
]
Substituting the known values:
[
I_g = frac{0.5 text{ W}}{10 text{ V}} = 0.05 text{ A} = 50 text{ mA}
]
Thus, the maximum value of current ( I_g ) for safe operation is 50 mA.