| The Shop > Electronics & IC Programing |
| Digital oscilloscope project/kit |
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| PK:
We have one of these at work http://www.peakelec.co.uk/acatalog/jz_lcr40.html As I recall, it wasn't 'chinese cheap' but it works very well and we use it more than we thought we would. |
| awemawson:
Yes I have one of those tucked away in a drawer. Extremely useful. Only irritation is that it's calibration period is obviously written into the firmware so it nags me to send it off whenever I use it! |
| John Swift:
tried the DSO138 power supply mod with firmware 113-13801 -050 you don't get an improvement unlike that as described at - http://forum.banggood.com/forum-topic-61279.html for the early version that's cloned using FW 113-13801-040 managed to buy 6 AA nicads for the Velleman K7105 'scope I built back in 2002 with no back light , the picture showing the trace of the test signal from the DSO138 is not great but shows the trace for comparison John PS RS Components do a slide switch that could be OK to mount onto a new front panel thought the 2 slide switches (sen1 & sen2)could be replaced by 1 rotary switch but the rotary 4 pole 9 way switches I've found so far are several times more than the cost of the kit ! |
| John Rudd:
Hmmm...I guess what you pay for.... No point in buying a Mini if you want Ferrari performance... :Doh: |
| PekkaNF:
I wonder how well this kind of rotary switches would work? http://www.partco.biz/verkkokauppa/product_info.php?cPath=2065_1046_1276&products_id=15706&language=en Are there any reasonable quality rotary switches like used on scope voltage input stage? Probably someone has considered building simple specialized input amplifiers, bit like differential amplifiers or such. Really hard to build an amplifier that is good in everything, but not too hard to build amplifier that does one or two things good eneough. Pekka |
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