| Electronics > Beginners |
| Can I build an AC/DC SMPS in 1 month? |
| << < (4/5) > >> |
| 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) |
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