BUT: it just has about 20kOhm, which causes an "on current" of 250uA (0.00025A), which is unnecessary high...
so i would recommend the following "circuit":
A switch with both types of contact is called a changeover switch. These may be "make-before-break" which momentarily connect both circuits, or may be "break-before-make" which interrupts one circuit before closing the other.
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