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<p>power transmission. Thyristors may be used in power-switching circuits, <a href="page.php?w=relay">relay</a>-replacement circuits, inverter circuits, oscillator circuits, level-detector circuits, <a href="page.php?w=Chopper_%28electronics%29">chopper</a> circuits, light-dimming circuits, low-cost timer circuits, logic circuits, speed-control circuits, phase-control circuits, etc. Originally, thyristors relied only on current reversal to turn them off, making them difficult to apply to direct current; newer device types can be turned on and off</p><p>
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