| 摘要 |
The invention relates to a device for charging the position of a functional element in an electrical apparatus, in particular the head-mounting plate in a magnetic tape apparatus. The functional element being movable between a rest or stand-by position and two spaced-apart operating positions, i.e. a first and a second operating position. The functional element, which is spring-loaded towards its rest position, is held electromagnetically in the first operating position. In order to cooperate with a first electromagnet device in both operating positions, the functional element is provided with a first armature plate. A control device controlled by a second electromagnet device, sets the non-extended functional element to its first operating position after said element has been applied to the first electromagnet device and extends the functional element, while applied to the first electromagnet device, to set it to its second operating position.
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