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2. Current sensing - Wikipedia

   en.wikipedia.org/wiki/Current_sensing

   The design of the saturable inductor current sensor is similar to that of a closed-loop Hall-effect current sensor; the only difference is that this method uses the saturable inductor instead of the Hall-effect sensor in the air gap. Saturable inductor current sensor is based on the detection of an inductance change. The saturable inductor is ...

3. Class of accuracy in electrical measurements - Wikipedia

   en.wikipedia.org/wiki/Class_of_accuracy_in...

   Ideally the measuring device should not affect the circuit parameters i.e., the internal impedance of the ammeter should be zero (no voltage drop over the ammeter) and the internal impedance of the voltmeter should be infinite (no current through the voltmeter). However, in actual case, ammeters have a low but non zero impedance and voltmeters ...

4. Glossary of electrical and electronics engineering - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_electrical_and...

   A light sensor that produces or alters a voltage when light is present. photodetector Any device that detects visible light. photodiode A two-terminal device whose terminal voltage or current changes in response to light. photometer An instrument that measures light. photonics The technology of conveying information through light or infrared ...

5. List of electrical and electronic measuring equipment

   en.wikipedia.org/wiki/List_of_electrical_and...

   Ammeter (Ampermeter) Measures current Capacitance meter: Measures the capacitance component Current clamp: Measures current without physical connection Curve tracer: Applies swept signals to a device and allows display of the response Cos Phi Meter: Measures the power factor Distortionmeter: Measures the distortion added to a circuit ...

6. Ammeter - Wikipedia

   en.wikipedia.org/wiki/Ammeter

   Demonstration model of a moving iron ammeter. As the current through the coil increases, the plunger is drawn further into the coil and the pointer deflects to the right. An ammeter (abbreviation of ampere meter) is an instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name. For direct ...

7. 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.