1 Answer
A thyristor is considered a passive device. While it does control the flow of current like an active device, it doesn't have its own power source or gain. It behaves like a switch that can either allow or block current flow based on its gate control.
When a thyristor is triggered (by applying a small current to its gate), it turns on and allows current to flow between its anode and cathode. Once it's on, it stays on until the current drops below a certain level (called the "holding current") or until the power is turned off. So, it's mainly passive in that it does not amplify or generate power by itself, but rather controls the power flow.
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When a thyristor is triggered (by applying a small current to its gate), it turns on and allows current to flow between its anode and cathode. Once it's on, it stays on until the current drops below a certain level (called the "holding current") or until the power is turned off. So, it's mainly passive in that it does not amplify or generate power by itself, but rather controls the power flow.
Let me know if you need more details!