Точно так же как и 1/2 тока с разным потенциалом на обмотках.
1/2 две обмотки запитаны поровну
1/4 две обмотки запитаны на равнамарно, одна на на полную мощьность а вторая на четверть мощности
{"assets_hash":"a8b26fa7f6e768b07a72c8c9aadb9422","page_data":{"users":{"44269bcc3df955007778c103":{"_id":"44269bcc3df955007778c103","hid":12981,"name":"Jen","nick":"Jen","avatar_id":null,"css":""},"467ae8143df955007778361a":{"_id":"467ae8143df955007778361a","hid":24400,"name":"barnaul","nick":"barnaul","avatar_id":null,"css":""},"46b5c4563df9550077781ce1":{"_id":"46b5c4563df9550077781ce1","hid":26964,"name":"Dominga","nick":"Dominga","avatar_id":null,"css":""},"4706b9de3df9550077780ad6":{"_id":"4706b9de3df9550077780ad6","hid":28317,"name":"JudgeBod","nick":"JudgeBod","avatar_id":null,"css":""}},"settings":{"can_see_ip":false,"can_report_abuse":false,"can_see_hellbanned":false,"forum_can_view":true,"forum_can_reply":false,"forum_edit_max_time":30,"forum_can_close_topic":false,"forum_show_ignored":false,"forum_mod_can_delete_topics":false,"forum_mod_can_hard_delete_topics":false,"forum_mod_can_see_hard_deleted_topics":false,"forum_mod_can_edit_posts":false,"forum_mod_can_pin_topic":false,"forum_mod_can_edit_titles":false,"forum_mod_can_close_topic":false,"can_vote":false,"forum_mod_can_add_infractions":false,"forum_topic_title_min_length":10,"forum_reply_old_post_threshold":30,"votes_add_max_time":168,"forum_show_post_interval":7,"can_see_deleted_users":false},"section":{"_id":"61c9a54c3df9550077bb5117","hid":41,"title":"Общие вопросы","parent":"61c9a54c3df9550077bb51b9","description":"Обсуждение общих вопросов по станкам CNC, Hobby CNC и инструменту.","is_category":false,"is_votable":true,"is_writable":true,"cache":{"topic_count":2372,"post_count":31412,"last_post":null,"last_topic":null,"last_topic_hid":null,"last_topic_title":null,"last_ts":null,"last_user":null}},"topic":{"_id":"47ebb9fc3df9550077b196b1","hid":95637,"title":"1,1/2, 1/4 ..... шага","views_count":1773,"last_post_counter":4,"cache":{"post_count":4,"first_post":"47ebb9fc3df9550077b1a1c6","first_ts":"2008-03-27T15:15:08.000Z","first_user":"467ae8143df955007778361a","last_post":"47ec00f63df9550077b1a1cc","last_post_hid":4,"last_ts":"2008-03-27T20:17:58.000Z","last_user":"4706b9de3df9550077780ad6"},"st":1,"section":"61c9a54c3df9550077bb5117"},"subscription":null,"pagination":{"total":4,"per_page":25,"chunk_offset":0},"posts_list_before_post":["paginator","datediff"]},"locale":"en-US","user_id":"000000000000000000000000","user_hid":0,"user_name":"","user_nick":"","user_avatar":null,"is_member":false,"settings":{"can_access_acp":false,"can_use_dialogs":false,"hide_heavy_content":false},"unread_dialogs":false,"footer":{"rules":{"to":"common.rules"},"contacts":{"to":"rco-nodeca.contacts"}},"navbar":{"tracker":{"to":"users.tracker","autoselect":false,"priority":10},"forum":{"to":"forum.index"},"blogs":{"to":"blogs.index"},"clubs":{"to":"clubs.index"},"market":{"to":"market.index.buy"}},"recaptcha":{"public_key":"6LcyTs0dAAAAADW_1wxPfl0IHuXxBG7vMSSX26Z4"},"layout":"common.layout"}