unidirectional current การใช้

Medical applications of electricity often required a unidirectional current, particularly when treating nervous disorders.
For medical use, particularly when treating a problem with nerves, a unidirectional current of a particular polarity was often needed, requiring the machine to have split rings or similar mechanisms.
Other devices that have control electrodes as well as acting as unidirectional current valves are used where more than simple rectification is required e . g ., where variable output voltage is needed.