Submitted by Eigenurin t3_127f5hj in mildlyinteresting
buddboy t1_jefkwce wrote
Reply to comment by mopman94 in This old doll uses a vinyl like record to talk and sing by Eigenurin
I think its pretty interesting because it is shocking that this mechanical device is cheaper than a chip unless this works without batteries
Oclure t1_jefsjix wrote
They often do work without batteries, they are esentialy low quality plastic versions of the old school Victrola record players that rely on the record needle directly vibrating a diaphragm to make sound and thus need no power just somthing to spin the record which could be a pull string in a doll like this.
The same concept is used on those old animal sound spining toys, except those had multiple tracks arranged in concentric spirals on the record. When you pointed the arrow at the animal whose sound you wanted to hear you were actualy lining the record up so the needle would fall into the groove for the right track.
Quasm t1_jefpe44 wrote
They said it was an old doll, which depending on how old it was probably unthinkable to put an expensive microchip in a kids toy.
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