Electronics > Beginners
Can I build an AC/DC SMPS in 1 month?
Brumby:
Just a word about "being aware" of the risks of working with mains voltages.....
I've been "working with" mains voltages for more years than I care to admit, but this has been with fairly simple situations - mains wiring, switches, fuses, transformers and such. When there is a problem, these things can often be successfully diagnosed without power applied - and when power is applied, the measurements required are often simple and few.
Diagnosing an SMPS is more likely to be more involved. You will be making more measurements in a more confined space with more places for probes to slip.
I approach SMPS diagnosis with an order of magnitude greater care than "regular" mains circuitry. Not doing much SMPS troubleshooting will influence my caution, but it's still worth being more attentive.
KEIN NEIN:
understood, in that case could you tell me how to build an arduino DC load or osciloscope capable of drawing <10A (<50A if possible)
I have watched two videos already
KEIN NEIN:
or a buck converter maybe?
pigrew:
--- Quote from: KEIN NEIN on May 06, 2019, 06:52:49 pm ---or a buck converter maybe?
--- End quote ---
My suggestion would be to build a 5V to 3.3V buck converter, using Arduino to implement the PWM & feedback loop. You would need a few capacitors, resistors, an inductor, and diode (maybe a second MOSFET, too). Perhaps use a pMOSFET as the pass transistor (but a BJT could work, too).
-Nathan
KEIN NEIN:
Aside from mouser electronics and digikey which other stores do you recommend? (from mexico ofc)
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version