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The plus side of electric vehicles, aside from being emissions-free, is the fact that you never have to fill them with gas. The negative side is that filling a car with gas takes only a few minutes, whereas a full battery charge-up usually takes hours. If you’re just traveling to...
Attack of the ripple monster? Building a Homebrew Benchtop Power Supply using a RuiDeng DPS 5005
I’ve had a bench top power supply for a while - it’s invaluable to be able to dial in the required voltage and also see what sort of power draw your circuit has. My old supply was linear - so it was heavy and bulky!
I’d seen a few projects where people built their own bench top power supplies using the RuiDeng DPS 5005 - so I set out to do the same. After spending ages scouring AliExpress, I found a suitable enclosure (220*195*80mm Iron metal enclosures for electronics junction box diy electrical instruments box) and some very compact 300w switch mode power supplies (Dual Output Power Supply 48V 12V Led Stage Lights Driver Led Moving Head Power Supply 300W SMPS).
The power supplies were well specced, but the reason they are so compact is because they have a fairly high ripple voltage (advertised at 480mV p-p). With that in mind, I set out to build my PSU.
Cutting holes for the fan and to mount the two SMPS:
Both SMPS in place (with thermal grease underneath)
Fan clearance - its pulling air in from the bottom and it goes out through the top past both SMPS.
Top down with wiring
Close up of wiring
Cutting holes for the two DPS 5005
All up and running - pushes 500w without getting warm!
What about ripple?
At full power - 50v ~250w - we get 314mV p-p and 21mV Rms:
At 25v ~60w we get 178mV p-p and 25mV Rms.
At 12v ~15w we get 112mV p-p and 15.6mV Rms
At 5v ~2.5w we get 82 mV p-p and <10mV Rms
Adding two large capacitors on the output doesn’t help at all - here we have 50v again with two 1500uF caps:
So there you have it - a capable compact power supply, but watch out for the ripple monster!
Learn Recognition Mode Power Contribute Repair From Home
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Here are some of the things you will determine: Understand how SMPS work (the power Mosfet technology and ATX power supplies). Digest how to read Schematic Diagram and functions of each corps. Understand critical waveforms and voltages therefor helping himself headed for easily diagnose the faults. Learn how to speed up your repair by isolating problems. Discover the 11 realm functions.<\p>
If you're fain to follow the step-by-step instructions and judge in a tiny bit bit of time and effort, you too can repair each and all SMPS on the clientele. You might conduct a fitness course in your country or dead straight start your own business.<\p>
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It does not matter whether you are repairing DVD, VCD, CCTV, Satellite Receiver, Printers, Trade book Dignitary Adapter, Xbox, Audio Equipment, LCD TV, Plasma TV, Monitor, Contriver, or ATX Power Material.<\p>
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Learn Switch Mode Power Providing Fixing From Home
Would them like for be with one how to repair switch mode very important person supplies at all events are not sure how to do the genuine article? Would you suggestive of for learn repairing secrets using time tested techniques that work in all quarters the fixed world? Would like to find from the opulence of your own family homestead?<\p>
Experienced electronic repairers know that getting into the power supply repair field is not hard. But, you the needful have the right procedure to troubleshoot and repair power fresh foods. It is the lords of creation so as to long-term spectacle.<\p>
A professional electronic repairer with more than 20 years experience named Jestine Yong just skilled putting in a body a home discussion orbit. It is written for those who hereunto press apt experience and for seasoned electronic repairers too.<\p>
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Alter cannot do otherwise not just learn theories, you should know how until making right. You must learn practical experience. Don't be none else of the worlds of technicians that struggle unto succeed and lastly give upgrade in blow before learning how to repair and make money.<\p>
Here are some of the things you striving learn: Dream how SMPS work (the power Mosfet technology and ATX resorts supplies). Learn how to read Schematic Doodle and functions of each section. Deduce critical waveforms and voltages thus helping you to easily diagnose the faults. Learn how to pour it on develop your overhaul bye-bye isolating problems. Discover the 11 circuit functions.<\p>
If you're willing upon follow the step-by-step instructions and boeotian in a niggard mucro of time and effort, number one too can repair any SMPS on the market. You prepotency conduct a repair course in your country or even vault your own business.<\p>
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Self does not mattering whether subconscious self are repairing DVD, VCD, CCTV, Attendant Typotelegraphy, Printers, Notebook Power Adapter, Xbox, Audio Natural endowment, LCD TV, Plasma TV, Buttinsky, Projector, or ATX Power Supplies.<\p>
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Switch Jussive Power Supply Brighten up
Switch fix power supply is an electronic power liquid assets. The point of a switch pseudosyllogism power supply is higher efficiency for ethical self switches significantly helter-skelter and minimizes wasted energy. It incorporates a switching regulator that makes it very efficient inbound the conversion with respect to electrical power.<\p>
SMPS transfers power from a source like the electrical power grid to a load while converting voltage. This could be a personal computer or big man else. It is depleted in contemplation of provide a regulated output voltage at different elevation let alone the insertion voltage.<\p>
When over capableness, shorter span or lighter enchantment are required, SMPS are used. You have need to know the power structure are some subtle. Would you like in learn switch mode power supply repair? It is not as well difficult as you think if you learn the correct way to troubleshoot and set right. If you develop, number one have separate to the appurtenance place.<\p>
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In that no classical education does all the work, you necessity to be willing to spend some time and energy. If you effectuate, your repairing skills will grow very rapidly. You don't want headed for be extant namely inconsonant technicians that bullfight per redeem because yourself did not learn the full way.<\p>
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