i have been using it and it’s been fine
but it buzzes now
and also cuts out if you draw more than low power
note
THIS IS NOT THE POWER SUPPLY I FIXED BEFORE it’s different
anyway it’s rated for 10A but is dying being asked for intermittent 6.5
and nothing is obviously hot
so yeah
what’s it likely to be? power transistors?
Continuing on the "Hangell" switching bench power supply I received a few weeks ago...
I mentioned there was some switching noise visible on the output - not a lot, but more than I'd ideally want. Today I built a filter for its outputs, with a large-ish common-mode inductor/choke rated 10 mH (accurate enough, though my meter says it drops to about half that at 100 kHz) sandwiched between a couple of 1 μF class X2 safety capacitors.
It seems to have done the trick. Under a moderate load, all the random hash has disappeared, leaving only some spikes at the switching frequency, and those are much smaller than they were before. The RMS noise value is now (barely) under 1 mV, if you believe my cheapish oscilloscope.
Like a lot of switching supplies, there's a lot of open space in the chassis, so I had room to squeeze the filter inside. I'm pretty happy with it!
Now to see if this no-brand thing works for any length of time.
#YumCha #SMPS #PowerSupply #SwitchModeSupply #Hangell #bench #workbench #noise #filter #electronics #hobby
#FamilyFarms are some of the biggest benefactors from #GreenEnergy . In the USA, farmers can get paid thousands of dollars for each wind turbine on their land. This is a reliable source of income in an industry that gambles heavily on the weather and market prices.
https://cleanenergy.org/news/wind-power-pays-222-million-a-year-to-rural-landowners/
@randahl #WindFarms #SolarFarms #ElectricGrid #PowerGeneration #PowerSupply #PowerGrid #Farming #FamilyFarms #PowerSources
Nguồn máy tính – Linh kiện quan trọng của hệ thống PC
Nguồn máy tính (PSU) đóng vai trò cung cấp điện năng ổn định cho toàn bộ linh kiện trong hệ thống PC. Lựa chọn nguồn phù hợp giúp máy tính hoạt động ổn định và bền bỉ hơn.
Tham khảo các mẫu PSU tại:
https://hacom.vn/nguon-may-tinh
#PowerSupply #PCBuild #ComputerHardware #TechComponents #HACOM
Inside a 3000W Water-Cooled Power Supply with GaN & SiC by ElectrArc240
- AC/DC: Interleaved Totem-Pole PFC
- DC/DC: ZVS Phase Shifted Full Bridge
https://www.youtube.com/watch?v=da9GwXX-0Zs
#PowerSupply #Teardown #WBG
very pleased to have got the little retention post at the blank end of the power supply (on the right front corner) pretty much exactly right the first try ^_^
the dowel in back (slightly visible here, more visible on the other side) is the other retention clip.
anyway the switch LED is powered by actual DC power out, the switch controls AC power in so the power supply is completely actually off when it's in "off" position, not just in standby or something. (It uses like 1.4 watts in standby so it's not like it's a lot, but why use any when you don't have to?)
let’s make an endcap for this so it’s less sketchy, shall we?
Daniele Verducci 🧉
Solarbird 
C.
The Many Voices of Anne Ahlert
HACOM – Laptop & PC Gaming
Open Power Electronics