Can You Measure Electricity Without Probes?

[3301]

So yeah... Is there a way of doing " measuring " electricity and not using probes? Laser perked?

 

[berkeman]

So yeah... Is there a way of doing " measuring " electricity and not using probes? Laser perked?

There are non-contact hand-held AC voltage detectors like the one below. But they are just threshold detectors, without a quantitative readout. They use the person as the "ground" reference for the AC E-field detection...

http://lghttp.17652.nexcesscdn.net/...8e27adf667b20d5f3db4b7e3a38cc2/m/i/mit751.jpg

 

[3301]

Any instrument that can check quantitative value ? :) Not even star track could grasp this concept :)

 

[Mark44]

There are devices called clamp ammeters that can measure the current flowing through a wire. The ammeter makes no physical contact with the wire -- it senses the magnetic field around the conductor.

Here's one: http://www.testequipmentdepot.com/products.htm?item=324&utm_source=bing&utm_medium=cpc&utm_campaign=Bing Product Ads&utm_term={QueryString}?utm_source=bing&utm_medium=cpc&utm_campaign=Bing Product Ads&utm_term={QueryString}

 

[jedishrfu]

Here's a brief discussion on how non-contact voltage sensors work:

http://www.fluke.com/fluke/uses/com...rticlecategories/electrical/capacitivevoltage

 

[meBigGuy]

E beam probers are used in the semiconductor industry.

https://en.wikipedia.org/wiki/Electron_beam_prober