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The text in your image could be improved by making it lighter than the background, but that's not important to the solution. By using "torque required for rotating mass" as the search terms, I found many resources to assist your goal. Unfortunately, most of them use Imperial measurements and it appears that you're using the metric system. Not to ...


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You can do this with a pair of Omron programmable timer modules that mount onto DIN rails, no software required. They are extremely flexible and can be easily configured to perform a variety of tasks like this. They are basically a set of relay contacts which are exercised by an internal clock, packaged into a small plastic enclosure with a clock display and ...


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An alternative to an H-Bridge (preferred method if you are already using a controller - it also lets you use those overkill relays for other projects) would be having +/-6V at the motor. This would mean a 12V supply with one leg of the motor at a regulated 6V. You connect the second leg to 12V for one direction and 0V for the other direction, getting you 6 ...


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If I am not mistaken, you can use an H-Bridge for that. If you are using an arduino for example, there are a few motor drivers like L298N which do exactly that job (control the direction and speed of a dc motor).


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Be careful: "efficiency" usually means the ratio of energy applied to energy removed from the "cold side" object. Since a Peltier junction has a fixed delta-T , you won't get any colder by increasing the heat-sink capability. You will get to the cold limit faster, or even get to a lower temperature if you use cold water instead of room-...


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