The result is a little DC exciter present-day indirectly controls the output of the key alternator.[22] [thirteen] The introduction of transformers inside the mid-1880s led towards the widespread usage of alternating current and using alternators needed to produce it.[fourteen] Soon after 1891, polyphase alternators were introduced to provide currents of https://9kgsexdoll86317.webdesign96.com/35914048/new-step-by-step-map-for-clutch