2021-07-04

[public] 158K views, 8.07K likes, dislikes audio only

GreatScott!

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Previous video: /youtube/video/GHdIGt7bbyU

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Twitter: https://twitter.com/GreatScottLab

Support me for more videos: https://www.patreon.com/GreatScott?ty=h

Altium Designer: https://altium.com/yt/greatscott!

You can find more information about my DIY solution here: https://www.patreon.com/posts/52795400

The website shown with the nice 3D printed current clamp: https://matthewtran.dev/2019/08/diy-dc-current-clamp/

You can get the commercial AC/DC current clamp here (affiliate links):

https://s.click.aliexpress.com/e/_AVZjBj

DIY solution parts list (affiliate links):

LM7805: https://s.click.aliexpress.com/e/_dXSrfiP

Resistors: https://s.click.aliexpress.com/e/_dTPpXjt

Capacitors: https://s.click.aliexpress.com/e/_d7dOwRz https://s.click.aliexpress.com/e/_dU4FEsB

S49E Hall Effect Sensor: https://s.click.aliexpress.com/e/_98ld1L

200k Trimmers: https://s.click.aliexpress.com/e/_AVTh3R

TL082 OpAmp: https://s.click.aliexpress.com/e/_9iaLp7

BNC connector: https://s.click.aliexpress.com/e/_AYumOt

PCB Terminal: https://s.click.aliexpress.com/e/_dYbstfZ

Perfboard: https://s.click.aliexpress.com/e/_dXx2Zv5

In this episode of DIY or Buy we will be having a closer look at my broken AC/DC current clamp which can be also called a current probe. The job of such a current clamp is simple, visualizing the current waveform on an oscilloscope. So in this video I will explain how such a current clamp functions and how we can make a DIY alternative in order to find out whether it makes sense to DIY such a tool or whether we should stick to the commercial solution instead. Let's get started!

Thanks to Brilliant.org for sponsoring this video.

Music:

2011 Lookalike by Bartlebeats

0:00 Why current clamps are awesome

2:04 Intro

3:00 Why not use a current shunt?

3:55 How does an AC current clamp work?

5:17 Measuring a DC current with a current clamp

6:41 Building a DIY AC/DC current clamp

7:26 Building a circuit for the current clamp

9:07 Testing my DIY solution

10:30 Verdict