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DSO138 oscilloscope
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Topic: DSO138 oscilloscope (Read 1536 times)
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nForce
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DSO138 oscilloscope
«
on:
October 16, 2018, 02:50:52 pm »
Where can I get a power supply for this oscilloscope:
https://www.ebay.com/itm/Fully-Welded-Assembled-DSO138-2-4-TFT-Digital-Oscilloscope-1Msps-Probe-B1/382222708181?hash=item58fe3fadd5:g:NTEAAOSw881Zs1d1:rk:2:pf:0
?
Because I don't get it with the package. I know it's not a good oscilloscope but, when I get use to it I will buy more powerful one.
Thanks.
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IDEngineer
Super Contributor
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Re: DSO138 oscilloscope
«
Reply #1 on:
October 16, 2018, 03:49:01 pm »
From the PCB silkscreening it wants 9VDC. A suitable 9VDC wall wart supply is likely hiding in one of your drawers somewhere!
I am a bit troubled by a PCB that has been "welded"....
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nForce
Gyro
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Re: DSO138 oscilloscope
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Reply #2 on:
October 16, 2018, 05:25:20 pm »
If you want true portability, a 9V (6 cell) AA battery holder with Alkaline or preferably NiMh cells works quite well.
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Best Regards, Chris
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nForce
exe
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self-educated hobbyist
Re: DSO138 oscilloscope
«
Reply #3 on:
October 17, 2018, 08:54:44 am »
I think manual says supply voltage should be in the range 9-12V. Above 12V onboard voltage regulator may overhead (so says manual, afaik).
I think mine worked from 8V or something. Below I started to get huge offset errors.
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nForce
Gyro
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Re: DSO138 oscilloscope
«
Reply #4 on:
October 17, 2018, 04:14:41 pm »
I implemented some mods to make mine more battery friendly, specifically for a 9V battery supply. It works from about 5.4V - 11V (ie. down to about 0.9V per cell)...
https://jyetech.com/forum/viewtopic.php?f=18&t=744
Use at your own risk (particularly the removal of the reversed supply protection)!
«
Last Edit: October 17, 2018, 04:19:13 pm by Gyro
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Best Regards, Chris
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