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Electronics and Circuit Design

Help - Connection of coolers in parallel.

Gustavo2915

hace 5 años

Good morning everyone, this is my first post and I'm just starting with electronics, I need help. I detail my question: This is the Brand and type of cooler that I want to connect: SUNNON: ME80251V1-000U-A99 Rating Voltage: 12 (VDC) Power Current: 145 (mA) Power Consumption: 1.70 (WATTS) Stage: On the one hand I want to connect 4 of those coolers in parallel to a SWITCHING SOURCE 12V 0.75A. (9W) On the other hand I also want to connect another 6 coolers in parallel to a SWITCHING SOURCE 12V 1A (12W) These coolers would be running between 12 noon to 6 pm per day, 7 days a week. Question: Do I need to add a resistance to compensate for the excess current? (If so, please advise me the best for each case). What is the best way to extend the life of the entire set of components and have a comfortable working margin to keep their temperatures to a minimum? Greetings and already thank you very much. Gustavo.

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Carlos Quiroga

1.400

hace 5 años

Hello, what each source delivers is independent of what each cooler consumes, on the other hand you have no choice but to put them in parallel since they are 12V the same as the source. What can be put is a fusistor in the event that someone gets heavy over time and begins to heat, to protect the source.

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Gustavo2915

hace 5 años

Thank you very much, could you promptly tell me which one I should use for each case? Greetings.

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Carlos Quiroga

1.400

hace 5 años

You can try 1Ohm and 3W, and the other 1Ohm and 4W.

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Gustavo2915

hace 5 años

Thank you very much for your help.

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ricbevi

17.055

hace 5 años

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hace 5 años

The current taken by the device will be what the manufacturer declares or a little more and if you place 4 x 0.145 = 580mA, using a feeder of less than double if it will be many hours is reckless at least. No one buys a car with a maximum of 200km / h to travel at 190km / h (as an example) Here the large in terms of current supported by the feeder does not sin and allows the change by devices of different currents without further modifications. My recommendation is that you place switching sources from 12V to 2A in both cases. You do not need to put anything if the fans are of quality and if you can get with rollers instead of bushings, the better Greetings. Ric.

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Gustavo2915

hace 5 años

Thanks for your response, I am new to this and I try to learn from the forums and what I find on the Internet, my perception regarding this issue was that if the difference between the Amperes that gave the source and the sum of the amperes of each cooler was large, what could happen was that each cooler receives much more current than it needs causing it to overheat or have negative effects.
According to your comment, you are telling me that the problem is that the source would be working at maximum capacity but that the above is true. Greetings and thanks

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ricbevi

17.055

hace 5 años

The current takes it as the amount of liters that a tank has, even if you have many liters stored, it will not come out more in a half-inch tap than it normally leaves.

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