#331 in Battery chargers & accessories
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Reddit mentions of (6 Pcs) MCIGICM LM2596 Buck Converter, DC to DC 3.0-40V to 1.5-35V Step Down Power Supply High Efficiency Voltage Regulator Module
Sentiment score: 1
Reddit mentions: 4
We found 4 Reddit mentions of (6 Pcs) MCIGICM LM2596 Buck Converter, DC to DC 3.0-40V to 1.5-35V Step Down Power Supply High Efficiency Voltage Regulator Module. Here are the top ones.
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Input: DC 3 V to 40 V . **NOTE** Input voltage must be 1.5 V higher than the output voltage, no boost.Output: DC 1.5 V to 35 V. Output current: 3A ( Max).All products are tested for stability, consistency and reliability. Ensure product excellence.Steps: connect to power source, adjust the swirl button on the blue potentiometer and monitor voltage with multimeter to get the needed voltage (The factory have tested these at max voltage so they are very high by default, takes about 15-20 turns CCW before the voltage starts ramping down)
Specs:
Sorry, my bad..... if you are going to use 12v fan that runs all the time may I suggest a buck converter.... here they run about $5...they step the 24v supply down to 12v.... of course you may have the same issue sourcing it.... simple to wire....24v at one end then adjust it so the other end is 12v...... this is the proper way to run 12v fans on these and it wont cause them to wear out prematurely like running them in series will......
If you do run them in series they aren't quite identical so one runs hotter than the other....and eventually they both burn out at about half their normal lifespan...
I know you cant buy from here but this is what I'm talking about
https://smile.amazon.com/gp/product/B06XZ1DKF2/
12v 1500mA AC/DC converter, with Buck Converters for voltage regulation and to get 5v: https://www.amazon.com/gp/product/B06XZ1DKF2
I also notice that the listing on Amazon has:
6 x 12V Cartridge Heater with 1m wiring
6 x NTC 3950 100k Thermistor
1 x High Temp Tape (15/32" x 108ft)
The
Cartridge Heateris listed as12V; could this be the culprit? If so what can I do about it? Can I adjust the firmware? I have some bucket converters (https://www.amazon.com/gp/product/B06XZ1DKF2/) but I would prefer not to have to use them.No.
>In the USB 1.0 and 2.0 specs, a standard downstream port is capable of delivering up to 500mA (0.5A); with USB 3.0, it moves up to 900mA (0.9A).
screen: 12v x 1a = 12watts
usb 1-2: 5v x 0.5a = 2.5watts
usb 3: 5v x 0.9a = 4.5watts
under the best scenario (no loss at all during conversion) you are still 7.5watts short.
You would be better off using something like a laptop psu a couple buck converters to drop the voltage down to the 12v and 5v you need.