| Electronics > Beginners |
| Choosing a PSU, what should I look for |
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| Mr. Scram:
--- Quote from: james_s on February 24, 2019, 06:44:35 pm ---Do I really have to point out that I'm not the only one here who has used gear? Thousands of people buy used gear and for most it works out just fine. Older higher end equipment tends to be very well made. --- End quote --- I was talking about your experience with a Chinese unit, not even taking things like confirmation bias into account. |
| rstofer:
--- Quote from: Moriambar on February 23, 2019, 07:59:19 pm --- Thank you. I want my computer as far as possible from my bench so I don't know about the computer controllable one. Also I just need a PSU, I wouldn't know how to use the graphing or anything. Cheers --- End quote --- But... A lot of hobby level electronics revolves around Arduinos and other microcontrollers. Personally, I like to play with FPGAs. More important is the Digilent Analog Discovery 2 - you should really check it out. You get a lot of test equipment in a pocket sized box but, yes, it needs a computer. It's a terrific tool! I can't imagine not having a computer along side my work area (I'm deliberately not calling it a bench). I have a table top fully around 3 sides of a bedroom/hobby room. In the center of the U is where I play with electronics. The rest of the tabletop is relegated to computers, printers and assorted networking stuff. Lots of computers... I guess if I were doing audio I might not need a computer unless I wanted to measure THD with the Analog Discovery. Or maybe if I was interested in the phase response and gain (versus frequency, of course) of some amp but I don't do audio... Every development board I buy has a USB programming port. If it didn't, I wouldn't buy it! |
| Moriambar:
--- Quote from: rstofer on February 24, 2019, 08:00:59 pm --- --- Quote from: Moriambar on February 23, 2019, 07:59:19 pm --- Thank you. I want my computer as far as possible from my bench so I don't know about the computer controllable one. Also I just need a PSU, I wouldn't know how to use the graphing or anything. Cheers --- End quote --- But... A lot of hobby level electronics revolves around Arduinos and other microcontrollers. Personally, I like to play with FPGAs. More important is the Digilent Analog Discovery 2 - you should really check it out. You get a lot of test equipment in a pocket sized box but, yes, it needs a computer. It's a terrific tool! I can't imagine not having a computer along side my work area (I'm deliberately not calling it a bench). I have a table top fully around 3 sides of a bedroom/hobby room. In the center of the U is where I play with electronics. The rest of the tabletop is relegated to computers, printers and assorted networking stuff. Lots of computers... I guess if I were doing audio I might not need a computer unless I wanted to measure THD with the Analog Discovery. Or maybe if I was interested in the phase response and gain (versus frequency, of course) of some amp but I don't do audio... Every development board I buy has a USB programming port. If it didn't, I wouldn't buy it! --- End quote --- When I use micros I program them far from the "bench". My old computer got stolen from me and had to buy a new one this year and I'm too scared of that blowing up to keeping it near. So it's "no way José". That's also why I invested in the SDS1104x-e oscilloscope: its logic decoding is fantastic. I really love dedicated instrumentation such as scopes and such and I really hate pc-based stuff such as logic analyzers. Granted: they're needed sometimes, but the 10$ cheap chinese one I have is already overkill for me. And when I have to use it boy am I scared to bring my precious laptop nearby hahah. To summarize: computer-> as far from the bench as possible. Both because I'm not confident enough and because I do hate pc-driven instrumentation. Perhaps one day I'll buy a cheap ass computer and put it on the bench and if it blows up who cares. But not now! EDIT: please do mind that mine are a beginner needs, and that I practically do not know how to use a bjt (since I use mosfets as switches and never needed a transistor for anything else!) |
| rdl:
I was only pointing out the worst issue (to me) of the two power supplies. Maybe Siglent did fix the rust problem. The EEVblog 828 teardown of the SPD3303X does show the problem still in December of 2015, but maybe that was old stock. At least the Siglent power supply does look much better than the Rigol, though I'm not too fond of the colors. |
| Mr. Scram:
--- Quote from: tautech on February 24, 2019, 08:03:10 am ---I'll stick firmly to what I have posted and still call you unread.....or just too damn lazy to hunt out the appropriate threads, quotes and posts. ::) Catch up time, the most recent of this below is 3+ years old. Start here: And: And: And: Post by EEVblog: Yes, they changed their process and fixed it. They were very poor at communicating this though. --- End quote --- You don't seem to understand how harmful your behaviour is for the image of the brand. If you want to look like a chancy Chinese outfit, shooting and insulting the messengers, downplaying the issue and saying it's not the fault of the brand is the way to do it. Flat out denial and unpleasantness aren't going to win you customers. Proper brands own up to their mistakes and don't attempt to insult anyone who mentions them. Daniel Bogdanoff won't be seen doing whatever it is you're doing on here. I did read up on the issue and found Dave was offered a second review unit, but he wasn't interested in that since he just caught Siglent employees making sock puppet accounts on here. The only large outfit to ever be caught at that point and as far as I'm aware it still is. --- Quote from: EEVblog on April 09, 2015, 05:26:18 am ---They fixed it. They offered me a unit to inspect to follow-up but this was at the same time as Siglent employees were caught creating dummy accounts on the forum, so I had no interest in it after that. --- End quote --- |
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