A DIY Current Source Demonstrating Ohm’s Law - DC To Daylight

In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter: Engage with the element14 presents team on the element14 Community - suggest builds, find project files and behind the scenes video: Visit the element14 Community for more great activities and free hardware: Tech spotlights: Roadtest and Reviews: Project14: #0:00 Welcome to DC to Daylight #4:33 The Circuit #7:51 Build It #10:39 Test It #12:00 Give Your Feedback #ohmslaw #currentsource #DIY #4-wiremeasurement