0 a device, usually a semiconductor, that is used as a switch to control the amount of electricity passing through a particular point -- tyrystor
A later, modernised series, the 3xx subseries, include thyristor voltage selector, and an on-board computer.
Each thyristor tower has 2 valve functions and consist of 8 thyristor modules, which are arranged one on top of the other.
Positive voltage on the gate terminal with respect to the cathode turns the thyristor to the on state.
It is equivalent to a thyristor with a disconnected gate.
These were the first thyristor valves ever to use water/glycol mixtures directly inside the valve, with no separate secondary cooling circuit.
A solid-state relay uses a thyristor or other solid-state switching device, activated by the control signal, to switch the controlled load, instead of a solenoid.
The thyristor valve is usually installed in a purpose-built, ventilated building, or a modified shipping container.
Smoother control and more flexibility can be provided with thyristor-controlled capacitor switching.
