Türistoridel

Türistoridel is a Latvian term referring to thyristors, which are semiconductor devices used for high-power switching. A thyristor is essentially a bistable solid-state semiconductor device with four layers of alternating P-type and N-type material. It has three terminals: an anode, a cathode, and a gate. The device is normally in an off state, blocking current flow between the anode and cathode. However, a small positive voltage applied to the gate terminal can trigger the thyristor into an on state, allowing current to flow. Once triggered, the thyristor remains in the on state even if the gate signal is removed, as long as the anode-cathode current exceeds a certain holding current. To turn off a thyristor, the anode-cathode current must be reduced below the holding current, or the voltage across it must be reversed.

Thyristors are widely used in power electronics applications such as AC power control, motor speed control, lighting dimming, and power supplies. Their ability to handle high voltages and currents, combined with their relatively simple control mechanism, makes them suitable for various industrial and consumer electronics. The most common type of thyristor is the Silicon Controlled Rectifier (SCR). Other variations exist, including TRIACs, which can conduct current in both directions, and GTOs (Gate Turn-Off thyristors), which can be turned off by a negative gate pulse. The development of thyristors has been crucial in the advancement of modern power electronic systems, enabling efficient control and conversion of electrical energy.