21. The latter is known as a gate turn-off thyristor , or GTO thyristor. 22. The latter is known as a gate turn-off thyristor, or GTO thyristor . 23. This makes a thyristor unsuitable as an analog amplifier, but useful as a switch. 24. She was also fitted with a thyristor controller, which was removed before being sold. 25. The 1992 converter uses more conventional air-insulated, water-cooled thyristor valves. 26. This protects the vulnerable thyristor valve from damage due to flashovers, lightning strikes etc. 27. The thyristor valve needs to contain enough thyristors in series to withstand this voltage safely. 28. Main focus of his work was on Gate turn-off thyristor and fast diodes. 29. As of 2000, reliability had been poor with many thyristor failures at the inverter station. 30. The black rectangles are thyristor modules.
