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Principle of ON-OFF Control
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written 4.9 years ago by |
ON-OFF controller uses two SCRs connected in antiparallel as shown in figure.
During positive half cycle of the AC input at the instant $wt =0,2\pi,4\pi$. SCR $T_1$ is triggered at $\alpha =0$.Thus SCR $T_1$ conducts and positive half cycle appears across the load.
During negative half cycle of the ac …