На коллекторных электродвигателях Граупнер (в данном сл. 600) сверху надет довольно увесистый металлический кожух, который можно легко снять. Какую роль он выполняет и можно ли “кататься” без него?
“Замыкатель магнитного поля”, добавляет 3-5% КПД. Можно в принципе и без него.
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