0
\$\begingroup\$

There are plenty of ways to connect to a wire and measure what is going through it that involve breaking the insulation around the wire (such as positap connectors).

It is my understanding that a wire with current flowing through it creates a magnetic field around the wire. Could this effect be used to measure the amount of current flowing through a wire without breaking them? If so, can it be done with a small enough component to make it comparable to positap connectors?

\$\endgroup\$
  • \$\begingroup\$ Yes, it can be done. It's not as accurate. \$\endgroup\$ – immibis Nov 23 '17 at 23:17
  • \$\begingroup\$ Yes, you can measure the amount of current using a clamp meter, usually the currents need to be relatively high, its mostly used in industrial applications where you need to measure high currents without breaking the cable. \$\endgroup\$ – S.s. Nov 23 '17 at 23:19
  • \$\begingroup\$ Hall-effect sensors are pretty common, there are probes for oscilloscopes and for DMMs. The clamp is less than 10mm long in many cases. \$\endgroup\$ – Ale..chenski Nov 23 '17 at 23:19
  • \$\begingroup\$ i.e. How does a current clamp work? electronics.stackexchange.com/questions/341156/… \$\endgroup\$ – Sunnyskyguy EE75 Nov 23 '17 at 23:24
2
\$\begingroup\$

Current clamps are a mature product category. They are best suited to measuring AC or transient signals.

\$\endgroup\$
  • \$\begingroup\$ And there are instrumentation DC current clamps that measure down to microamps DC. Generally used for non invasive testing on current loops. \$\endgroup\$ – R Drast Nov 27 '17 at 8:56

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.