What is Magnetoresistivity and Magnetoresistors?

Magnetoresistivity is the phenomena of change of resistivity of some metals and semiconductor when it is exposed to external magnetic field. This phenomenon is observed at low temperature. The material which possesses magnetoresistivety are called Magnetoresistors. Magnetoresistivity is observed due to lengthening of path of moving electron when it experiences a force due to external … Read more

Hall Effect Transducer – Definition, Working and Application

Definition: Hall Effect Transducer is a device which is used for the measurement of magnetic field strength. This transducer uses a conducting strip to convert magnetic field into proportional potential difference across the opposite faces of strip using Hall Effect. Working Principle: The working principle of Hall Effect Transducer is based on Hall Effect. Hall … Read more

Piezoelectric Transducer

Definition: A transducer utilizing piezoelectric element to convert mechanical motion into electrical signal is called a piezoelectric transducer. This transducer works on the principle of Piezoelectric Effect. It is an active transducer. Piezoelectric Material and Piezoelectric Effect: A piezoelectric transducer uses a piezoelectric material as a transduction element. A piezoelectric material is one in which … Read more

Capacitive Transducer

This article explains the definition and working principle of a Capacitive Transducer. Apart from this, Advantage & Disadvantage and application of Capacitive Transducer are also discussed in detail. Definition: Capacitive Transducer is a device which changes its capacitance with change in the physical phenomena to be measured. It is a passive transducer which required external … Read more

Different Types of Transducers

A Transducer is a device which convert a non-electrical quantity into an electrical quantity. It comprises of a detecting / sensing element and a transduction element. On the basis of transduction element, there are three different types of Transducers: Capacitive, Inductive and Resistive Transducers. Apart from this, transducers are classified into following types: Primary and … Read more

Transducer – Definition, Working, Components and Application

Definition: A Transducer is defined as a device which converts one form of energy into other. The broad definition of a transducer includes devices which converts mechanical forces or physical changes into a proportional electrical signal. This essentially means that the input of transducer may be physical changes and output is electrical signal. The output … Read more

Thermocouple Explained

This article outlines the definition, construction, working principle, material selection, advantage and disadvantage of a thermocouple. Definition: Thermocouple is a combination of two different metallic strips joined together in such a way to form a loop. When the two junctions are kept at different temperatures, there is an electric current in the loop and an … Read more

RTD Sensor

Definition: RTD stands for Resistance Temperature Detector. RTD sensor is basically a temperature sensing device in which change in resistance of the detector element is calibrated with temperature. Thus, a change in resistance directly gives the value of temperature of the system. It is used to measure the temperature of a system and also known … Read more

Can Protection CT be used as Metering CT & Vice Versa?

Protection Current Transformer (CT) and Metering CT are two different types of CT as per their requirement and hence design. Therefore, Protection class CT should not be used as Metering CT. Similarly, a Metering Current Transformer should not be used for protection purpose. Let the discuss the reason behind this. Why can’t we use Protection … Read more