The discussion revolves around designing an electromagnet powered by a 12V 7Ah battery, with a focus on maintaining magnetic field strength while managing heat generation during operation. Participants are exploring component choices and circuit configurations to optimize performance for extended use.
There is an ongoing exploration of various approaches to the problem, with some participants providing suggestions for components and configurations. The discussion includes inquiries about the original poster's intent and the context of the project, indicating a productive dialogue without a clear consensus yet.
Participants note the importance of resistance in the circuit to prevent overheating and battery drainage, and there are hints of potential safety concerns related to the current setup. The original poster is encouraged to provide more specifications for better guidance.
What Charles said. Is this for a classroom demonstration? (I think you are a teacher, no?)Gersty said:
To the OP: The wire in such an arrangement is close to having zero resistance. You need to add some resistance in series. Otherwise, not only do the wires get hot, you drain the battery very quickly and the battery may even overheat on you=basically you are short-circuiting the battery without any series resistance=somewhat unsafe to do this.berkeman said:
