Kerrowman Posted November 7, 2022 Report Share Posted November 7, 2022 Hi there, I would like to know if I can use a large capacitor to store energy on the way that I currently do with an 18Ah lithium battery? My understanding is that with the minimal internal resistance of a capacitor, they can discharge their energy very fast even though the energy density is not as big as that of a battery. With this natural tendency for a fast discharge then how could one regulate the output current to a steady dependable rate without inserting some resistance to increase the RC value very significantly. Also there will surely be energy wasted as heat through any such resistance. So to be more specific to my application, I am currently storing energy from HV transients in an 18Ah LiFePO4 battery and then later using that energy to run a small load. From past experience I know that my HV transients can quickly charge up a bank of capacitors (50mF) but would it be feasible to use that energy, with additional energy from a PSU for example, to run the circuit that is producing the transients in the first place? Is that an option or are there too many technical hurdles, due to the nature of capacitors, to make that efficient and workable? I also expect such large value capacitors (1-2F) would be very expensive. Thanks Quote Link to comment Share on other sites More sharing options...
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