3 ms·

> The bimetallic component means that one metal heats and expands faster than the other, eventually breaking the circuit. I thought the circuit that powers the

> The bimetallic component means that one metal heats and expands faster than the other, eventually breaking the circuit. I thought the circuit that powers the cooking was broken because, when the water has boiled away, heat rises and a magnet holding the circuit closed is weakened by the heat, which allows a spring to pull the magnet away and break the heating circuit. (Magnets are weaker when hot.)

Buttons840 2y ago
I'm getting multiple downvotes here. Am I wrong? What am I missing?
- yreg 2y ago
  No idea. You are correct - that's exactly how many rice cookers work. Technology Connections: https://youtu.be/RSTNhvDGbYI https://youtu.be/RSTNhvDGbYI
  - gcanyon 2y ago
    I came to post this video! But I think it's clear that this isn't the design being describe in the original article: that mentions a double-boiler, which is not in evidence here and TC even mentions the double-boiler aspect of earlier designs at around 9:30 in the video. He also says that he was only able to trace the origin of this design back to the '70s. So it's possible that earlier designs didn't use magnetism, and the magnet-based design was a simplification of earlier water-boiling-at-100c-based designs.
- jeffalyanak 2y ago
  > I'm getting multiple downvotes here. Am I wrong? What am I missing? I wouldn't have downvoted you for it, but it sounds like you missed this from the article: > While the rice cooked in the inset pot, a bimetallic switch measured the temperature in the external pot. While more modern rice cookers may use curie point magnetic switches, that's not what the original rice cooker used.
  - yreg 2y ago
    The user did not "miss this". They've reacted to it by saying that they have thought rice cookers work differently. Which indeed many of them do.
    - jeffalyanak 2y ago
      They replied to a comment about the bimetalic switch in this cooker with "I thought the circuit that powers the cooking was …". While both you and they are correct that more modern devices work that way, that's not how this one works. It's possible that they didn't miss that fact, but their comment reads as being a direct response to the discussion of the control circuit of the first rice cooker.

Buttons840 2y ago

I'm getting multiple downvotes here. Am I wrong? What am I missing?

yreg 2y ago
No idea. You are correct - that's exactly how many rice cookers work. Technology Connections: https://youtu.be/RSTNhvDGbYI https://youtu.be/RSTNhvDGbYI
- gcanyon 2y ago
  I came to post this video! But I think it's clear that this isn't the design being describe in the original article: that mentions a double-boiler, which is not in evidence here and TC even mentions the double-boiler aspect of earlier designs at around 9:30 in the video. He also says that he was only able to trace the origin of this design back to the '70s. So it's possible that earlier designs didn't use magnetism, and the magnet-based design was a simplification of earlier water-boiling-at-100c-based designs.
jeffalyanak 2y ago
> I'm getting multiple downvotes here. Am I wrong? What am I missing? I wouldn't have downvoted you for it, but it sounds like you missed this from the article: > While the rice cooked in the inset pot, a bimetallic switch measured the temperature in the external pot. While more modern rice cookers may use curie point magnetic switches, that's not what the original rice cooker used.
- yreg 2y ago
  The user did not "miss this". They've reacted to it by saying that they have thought rice cookers work differently. Which indeed many of them do.
  - jeffalyanak 2y ago
    They replied to a comment about the bimetalic switch in this cooker with "I thought the circuit that powers the cooking was …". While both you and they are correct that more modern devices work that way, that's not how this one works. It's possible that they didn't miss that fact, but their comment reads as being a direct response to the discussion of the control circuit of the first rice cooker.