Pardon a top post, plz, I'm on my phone again...
Oscilloscopes are a great tool for either (a) analyzing analog waveforms, if you know what you're doing, or (b) looking like the absolute incarnation of technological tomfoolery, if you don't.
Mostly I fall into the second category. My scope is a secondhand, pre-moonshot Tektronix 422. It weighs about as much as a good stout WW2 battleship and probably has just as much metal... it certainly has almost as many controls, and the dizzying array of knob and levers and buttons means I have virtually no idea how to work it. I do have the manual and a lot of bad excuses, though!
...anyways...
These links may be of some use. The first couple are a little outdated, but all should be serviceable...
https://hackaday.com/2016/01/27/a-tale-of-two-sub-100-oscilloscopes/
https://hackaday.com/2017/11/09/review-jye-tech-dso150-oscilloscope-kit/
https://hackaday.com/2017/11/18/ds212-oscilloscope-review-open-source-and-gr...
...and, if you're "Robinson Crusoe on a Desert Island" desperate (note, I wouldn't trust myself with this one!)...
https://hackaday.com/2017/04/06/hacking-a-vintage-tv-into-an-oscilloscope/
There are also dead-simple recipes out there (Forrest Mims, /et al/) for o-scope builds using (literally) a few chips and a double-fistful of LEDs... but those badly lack the sort of display resolution you need for this.
HTH...
Chris
On Sun, Sep 9, 2018, 11:26 PM David Niklas doark@mail.com wrote:
Hi, I need help here. I was designing the power supply of my laptop and I noticed that some power bucks and step up/down converters (Which both seem to do the same thing. Please tell me otherwise.), produced a more stable power supply than others. In order to find out if they are truly suitable for suppling power to sensitive electronics I've heard that I need an oscilloscope. I currently own:
- #222634543946
"DC-DC 10/12/15/20A 150/250/300/400/1200W Step up Step down Buck Boost Converter"
- #152710861245
"2A DC Boost Step-up Adjustable Converter Module 3v-24v to 3.3v 5v 6v 9v 12v 24v"
After learning that some guy with an oscilloscope reviewed these, I'm planning to get: #122923215542 "6 Pack MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck M2H3 6 Pack MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck"
I've seen many oscilloscopes online on crowd funding campaigns. I've never been certain of which to get, if any. The real professional ones are out of my budget range of about $100. *I'll pay more if I must*, but I already did not anticipate the need to actually evaluate what should be solid products. I probably should find a solid adjustable DC power supply to test these with vs. an old laptop power pack or some batteries. What I need some of these things to do is to take a dynamically variable voltage as input (Li-Ion batteries in series), and produce a constant voltage as output. Others I need to just convert to the correct voltage from the old laptop power pack.
Thanks! David
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