Hello There, I have a question about my circuit as I don’t wanna burn my house down. Basically I bought a 5V 40A switch power supply. The fan I’m operating of it is a 12V, therefore, the fan spins too slow for my liking. However, I read that if you put the wires in series it will make I 10V. Will connecting + and - on my power supply not break it? The images are attached to this post, thank you in advance, Sylwester.

 

hi R27,
Do you have a power supply model number or a link to the supply site.?
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Thank you for the quick response the link to the power supply is: Amazon power supply. But, I got the model number for you aswell, I’ve attached it, thank you so much again.

 

hi R27,
Looking at the photo image and the information you have posted, I would say that there is only one +5V output.

All the +V are connected together and the -V are also connected together.

ie: -V, -V, -V, are common and the +V,+V,+V are common.
Do you have a volt meter to check the connections?

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Update:
Checking the Amazon page confirms only one +5V output

 

hi R27,
Looking at the photo image and the information you have posted, I would say that there is only one +5V output.

All the +V are connected together and the -V are also connected together.

ie: -V, -V, -V, are common and the +V,+V,+V are common.
Do you have a volt meter to check the connections?

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Sorry I don’t have a meter to check. So if I connect v- to v+ and use the corresponding v- and v+ this won’t give me 10v since they are common and will break my supply? How would I get above 5V since the fan I connected it to is running to slow is there a way to do this? Thank you

 

hi,
You require a 5V to 12V 1Amp step up [ boost] module from Amazon or eBay.
for example.
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https://www.amazon.co.uk/Step-Module-Converter-2-1x5-5mm-Connector/dp/B07K15T73K

or this type.
https://www.amazon.co.uk/Converter-Module-Adjustable-Voltage-Step-up/dp/B07PRV5X2F

 

Thank you this has helped me a lot didn’t realise, good i didn’t connect the power supply like I wanted to, I have one more concern, my power supply current is 40A and the step up wire says is a max of 1A will this not create a fire hazard ? I couldn’t find a step up converter for this high current or will it work fine, thank you again EricGibbs

 

hi,
The 5v to 12v converter will only draw the maximum 1 Amp current it needs from the 5V 40A supply.
Why did you buy a 40Amp power supply, that's a lot of possible current for general electronic use.
A 5V at say 5Amp or 10Amp would be typical.

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Pob hwyl gyda'ch prosiect

 

I’m learning, I read on the internet that more current means more efficiency, 40 amps will not drain more electricity right since so much isn’t being used? Also regarding the module you sent me, it is rated for 10W maximum I need adleast 120W as my fan is rated at that. So how would I connect the USB port to my dc supply as I assume that’s where the converter is located, and the other male end I would just strip off I guess, thank you again

 

hi,
The 5v to 12v converter will only draw the maximum 1 Amp current it needs from the 5V 40A supply.
Why did you buy a 40Amp power supply, that's a lot of possible current for general electronic use.
A 5V at say 5Amp or 10Amp would be typical.

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Pob hwyl gyda'ch prosiect

so if I strip the male end of the female to male usb connector and connect that to the dc supply and then use the wire u sent me connect that into the female port and stip the male connector of that and connect it to my fan that should work at 120W right? Thank you again and sorry for so many questions

 

hi,
If your 12v Fan is rated at 120Watt, this means a current of 1Amp [Watts= Volts * Amps]
So check Amazon or eBay for a boost/step module from 5V to 12V, whose output at least 1Amp at 12V. There are many types available.
If you select one, post the link and we can check for you.

I read on the internet that more current means more efficiency, 40 amps will not drain more electricity

I would not agree with that statement. Watts = Volts * Amps.

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Update. let me find a module online for you.
@Roqisx27 isx27
https://www.ebay.co.uk/itm/283657020689?_trkparms=amclksrc=ITM&aid=1110006&algo=HOMESPLICE.SIM&ao=1&asc=20201210111314&meid=f7f4d3802c14422b9c2cde1183ce3349&pid=101195&rk=2&rkt=12&sd=175417011749&itm=283657020689&pmt=1&noa=0&pg=2047675&algv=SimplAMLv11WebTrimmedV3MskuAspectsV202110NoVariantSeedKnnRecallV1&brand=Unbranded&_trksid=p2047675.c101195.m1851&amdata=cksum:283657020689f7f4d3802c14422b9c2cde1183ce3349|enc:AQAHAAABIMFr2e4EmAnM%2ByHZkULYKDIJ4L66fOjNL0iupgt%2BzO1%2F3AE1t3mNirUYB96NktMCicMagiS6mbeTl0xquGODv9mVTTdgXI44PRA0a8XSrNgQxxRsfiIZVH6fwNkr7S1cUQawwuVt%2Bvx%2FS%2BrroDPta0LG2Ghir96KRGOaIMB0iKfuREMoJWqhoEu0zAc84yqGlUGD8kMxrPgWybN%2B5%2B5pXAwz%2FrP9tIsBShHV9mXzlxpJRaokCsgd%2FqKhLo4wKCBO7JBUl6wfWgDCZm%2BgTL4l%2F6OT5K%2BD%2FOvi2REQeJog9ggQrjhUhDwameYbRiTcm%2BEPv8iS4qbq0LuWAFRyUvqrEiQLmOYErk%2FdbvUcKxjdLDSdVQR6jUhtHCRGnLIbcWfwlw%3D%3D|ampidL_CLK|clp:2047675

 

Hello I double checked it’s rated at 100w but that’s a tdp value I don’t really know what that means, also at the product information there is a different value I’m pretty confused but I recon 100w sound about right. So I need to find a converter that will supply me with 10 Amps? Right?

 

Hello I double checked it’s rated at 100w but that’s a tdp value I don’t really know what that means, also at the product information there is a different value I’m pretty confused but I recon 100w sound about right. So I need to find a converter that will supply me with 10 Amps? Right?

 

hi,
If your 12v Fan is rated at 120Watt, this means a current of 1Amp [Watts= Volts * Amps]
So check Amazon or eBay for a boost/step module from 5V to 12V, whose output at least 1Amp at 12V. There are many types available.
If you select one, post the link and we can check for you.



I would not agree with that statement. Watts = Volts * Amps.

E

Update. let me find a module online for you.
@Roqisx27 isx27
https://www.ebay.co.uk/itm/283657020689?_trkparms=amclksrc=ITM&aid=1110006&algo=HOMESPLICE.SIM&ao=1&asc=20201210111314&meid=f7f4d3802c14422b9c2cde1183ce3349&pid=101195&rk=2&rkt=12&sd=175417011749&itm=283657020689&pmt=1&noa=0&pg=2047675&algv=SimplAMLv11WebTrimmedV3MskuAspectsV202110NoVariantSeedKnnRecallV1&brand=Unbranded&_trksid=p2047675.c101195.m1851&amdata=cksum:283657020689f7f4d3802c14422b9c2cde1183ce3349|enc:AQAHAAABIMFr2e4EmAnM%2ByHZkULYKDIJ4L66fOjNL0iupgt%2BzO1%2F3AE1t3mNirUYB96NktMCicMagiS6mbeTl0xquGODv9mVTTdgXI44PRA0a8XSrNgQxxRsfiIZVH6fwNkr7S1cUQawwuVt%2Bvx%2FS%2BrroDPta0LG2Ghir96KRGOaIMB0iKfuREMoJWqhoEu0zAc84yqGlUGD8kMxrPgWybN%2B5%2B5pXAwz%2FrP9tIsBShHV9mXzlxpJRaokCsgd%2FqKhLo4wKCBO7JBUl6wfWgDCZm%2BgTL4l%2F6OT5K%2BD%2FOvi2REQeJog9ggQrjhUhDwameYbRiTcm%2BEPv8iS4qbq0LuWAFRyUvqrEiQLmOYErk%2FdbvUcKxjdLDSdVQR6jUhtHCRGnLIbcWfwlw%3D%3D|ampidL_CLK|clp:2047675

View attachment 280440

Thank you for sending the module link, would this one work too as this one has higher amps 12 * 8 = 96 W 4 watts less than needed will that cause any issues ?
￡3.60 18％ Off | 8A DC-DC Step Up Down Buck Boost Converter Module DC 5V-30V to 1.25V-30V Adjustable Power Supply Transformer Voltage Regulator
https://a.aliexpress.com/_msOJ2cc

EDIT: will this need cooling as it saying on the module and this module that it heats up at higher amps?

 

hi,
If your Fan is 100 Watts at 12Vdc, then you need a converter with an output of 12V at 10 Amps.

What are you using a 100 Watt fan for.?
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hi,
If your Fan is 100 Watts at 12Vdc, then you need a converter with an output of 12V at 10 Amps.

What are you using a 100 Watt fan for.?
E

Thank you , so will the extra 20 w be not used similar to the amps. Im making a custom cooling rig for my cpu

 

Cooler Master Hyper H410R CPU fan requires 12VDC 0.2A (2.4W).
Doesn't your computer already supply 12VDC?

 

Cooler Master Hyper H410R CPU fan requires 12VDC 0.2A (2.4W).
Doesn't your computer already supply 12VDC?

But this is outside of my computer lol

 

Cooler Master Hyper H410R CPU fan requires 12VDC 0.2A (2.4W).
Doesn't your computer already supply 12VDC?

Why does it say 100 w tdp what does that mean

 

hi Roqis,
Which fan type do you have that's rated at 12V 100Watt.??
E