An inductor is connected in series with SCR to protect it against
A. damage due high dv/dt
B. damage due to high di/dt
C. damage due to large forward current
D. none of these
Explanatory answer :
An inductor is connected in series with SCR to protect it against damage due to high di/dt
At the instant of turn on, the current flowing through SCR is not distributed uniformly and the rate of rise of current (di/dt) is very fast.This produces localized hot spots and damages the device,hence SCR should be protected against this high di/dt. This can be achieved by connecting an inductor in series with the SCR, because inductance(L) opposes the high di/dt variations.
A. damage due high dv/dt
B. damage due to high di/dt
C. damage due to large forward current
D. none of these
Explanatory answer :
An inductor is connected in series with SCR to protect it against damage due to high di/dt
At the instant of turn on, the current flowing through SCR is not distributed uniformly and the rate of rise of current (di/dt) is very fast.This produces localized hot spots and damages the device,hence SCR should be protected against this high di/dt. This can be achieved by connecting an inductor in series with the SCR, because inductance(L) opposes the high di/dt variations.
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