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2. Electric fence - Wikipedia

   en.wikipedia.org/wiki/Electric_fence

   Electric fence. Charger for a plus-minus net fence. An electric fence is a barrier that uses electric shocks to deter people and/or other animals [note 1] from crossing a boundary. The voltage of the shock may have effects ranging from discomfort to death. Most electric fences are used for agricultural fencing and other forms of non-human ...

3. Current clamp - Wikipedia

   en.wikipedia.org/wiki/Current_clamp

   An electrical meter with integral AC current clamp is known as a clamp meter, clamp-on ammeter, tong tester, or colloquially as an amp clamp. A clamp meter measures the vector sum of the currents flowing in all the conductors passing through the probe, which depends on the phase relationship of the currents. Only one conductor is normally ...

4. Leakage (electronics) - Wikipedia

   en.wikipedia.org/wiki/Leakage_(electronics)

   In semiconductor devices, leakage is a quantum phenomenon where mobile charge carriers (electrons or holes) tunnel through an insulating region. Leakage increases exponentially as the thickness of the insulating region decreases. Tunneling leakage can also occur across semiconductor junctions between heavily doped P-type and N-type semiconductors.

5. Bill Gallagher (inventor) - Wikipedia

   en.wikipedia.org/wiki/Bill_Gallagher_(inventor)

   Inventor. Engineer. Businessman. Known for. Popularising the electric fence. Relatives. Bill Gallagher (son) Alfred William Gallagher MBE (17 May 1911 – 8 August 1990) was a New Zealand inventor, manufacturing engineer and businessman. He is notable for popularising the electric fence .

6. Eddy-current testing - Wikipedia

   en.wikipedia.org/wiki/Eddy-current_testing

   Eddy current testing (ECT) as a technique for testing finds its roots in electromagnetism. Eddy currents were first observed by François Arago in 1824, but French physicist Léon Foucault is credited with discovering them in 1855. ECT began largely as a result of the English scientist Michael Faraday 's discovery of electromagnetic induction ...

7. Test probe - Wikipedia

   en.wikipedia.org/wiki/Test_probe

   A test probe is a physical device used to connect electronic test equipment to a device under test (DUT). Test probes range from very simple, robust devices to complex probes that are sophisticated, expensive, and fragile. Specific types include test prods, oscilloscope probes and current probes. A test probe is often supplied as a test lead ...