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- Mon Jan 07, 2019 6:27 pm
- Forum: DSO138mini
- Topic: Question about using Portable power bank or Laptop
- Replies: 1
- Views: 11224
Question about using Portable power bank or Laptop
When I power my dso 138 mini using a portable power bank or my laptop, when I touch the Pos probe to my finger, no wave is shown. But when I plug it into the wall outlet, it shows the wave when I touch my finger on the red probe. This is what Im referring to -> https://imgur.com/a/JnNmYO6 However, c...