| Products > Test Equipment |
| Choosing an oscilloscope |
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| tautech:
--- Quote from: Fungus on October 03, 2020, 02:46:58 am --- --- Quote from: bdunham7 on October 03, 2020, 02:35:40 am ---Here (US) you can get a bottom-of-the-line 50MHz DSO from Siglent, with a warranty, probes and support, for $259. Depending on what is available to you, another brand might be a better option. --- End quote --- OTOH you might want more than 2 channels... --- End quote --- OTOH many don't. |
| bdunham7:
--- Quote from: Fungus on October 03, 2020, 02:45:48 am ---This needs settling. Does anybody have one and a meter to measure the power use? --- End quote --- Yes, or I did. I've overhauled a 2235 and a 2213A recently and I use the iso-variac, so I see the current. Both of them use less than 0.5A, IIRC, and they don't have a fan--they barely get warm except for the power supply transistors which run just below their melting point. I only have a 2221A at the moment and it uses 0.8A, but it has a fan and a whole DSO/logic board to run. |
| tautech:
--- Quote from: bdunham7 on October 03, 2020, 04:11:43 am --- --- Quote from: Fungus on October 03, 2020, 02:45:48 am ---This needs settling. Does anybody have one and a meter to measure the power use? --- End quote --- Yes, or I did. I've overhauled a 2235 and a 2213A recently and I use the iso-variac, so I see the current. Both of them use less than 0.5A, IIRC, and they don't have a fan--they barely get warm except for the power supply transistors which run just below their melting point. I only have a 2221A at the moment and it uses 0.8A, but it has a fan and a whole DSO/logic board to run. --- End quote --- :o You really need qualify this with your mains voltage as 0.8A*235VAC = 188W :wtf: Any modern DSO will at most use just 1/3rd of that. Yeah I know, you're on 115VAC but you'll now get the point. ;) |
| 0culus:
My 1960s boat anchor 585A uses over 700 watts. Fight me. >:D >:D >:D :-DD |
| bdunham7:
--- Quote from: tautech on October 03, 2020, 04:19:00 am ---You really need qualify this with your mains voltage as 0.8A*235VAC = 188W :wtf: Any modern DSO will at most use just 1/3rd of that. Yeah I know, you're on 115VAC but you'll now get the point. ;) --- End quote --- I'm just reporting the data. You can do the math! :) Oh, and the voltage would be exactly 120VAC (adjusted) and I don't know the PF, so.... Anyway, a 2235 runs as cool as a cucumber. And as quiet as one, too. |
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