Difference between 2-wire, 3-wire, and 4-wire signal transmitter connections

4–20mA sensor transmitters are very common in industries to measure physical parameters such as pressure, temperature, flow, etc. Based on how they are connected to the process control and automation systems, they are classified into 2-wire, 3-wire, and 4-wire signal transmitters. This article will help you understand the underlying concepts and the difference between 2-wire, … Read more

Differences between GTO and SCR

Gate turn-off thyristors (GTO) and Silicon controlled rectifiers (SCR) are semiconductor switching devices used in converters, rectifiers, charging circuits, etc. in order to control the current flow. This article illustrates the key differences between GTO and SCR. What is an SCR? An SCR is a unidirectional semiconductor device that can be triggered into conduction by … Read more

Difference between AC contactors and DC contactors

The AC contactors differ from the DC contactors in their construction, arc extinction, and usage in a circuit. In this article, let us discuss the major differences between AC contactors and DC contactors. Contactors are electrically controlled switching devices. They are used to switch electric motors, lights, reactors, capacitors, heating loads, EV charging systems, UPS, … Read more

Difference between grounding/earthing and bonding

Earthing and bonding are two terms very closely related but are different. Even though earthing and bonding are meant to prevent electric shock, they have a subtle difference that needs to be understood. This article explains the concepts and the difference between earthing and bonding. Note: The terms earth and ground refer to a common … Read more

Difference between Transistors and Thyristors

Transistors and thyristors are semiconductors switching devices. They are used for controlling current flow in circuits. They play a very important role in all power conversion devices. In this article let us compare and understand the difference between transistors and thyristors. The key difference between Transistors and thyristors Transistor Thyristor Basic Structure A transistor is … Read more

The difference between kVA and kVAR

The difference between kVA and kVAR is pretty simple. “kVA” is the unit of apparent power whereas “kVAR” is the unit of reactive power. Before getting into the topic, we recommend you to understand apparent power and reactive power better, by reading this: Real, Reactive, Complex, and Apparent power. Now, let us compare both of … Read more

Difference between BJT and MOSFET

BJT and MOSFET are two types of semiconductor transistors. Even though both of them are transistors, they are different from each other in various aspects. By the end of this article, you will know the difference between BJT and MOSFET. Bipolar Junction Transistors (BJT) A Bipolar junction transistor, commonly known as BJT, by its construction, … Read more

Difference between resistance and impedance

When we speak about DC electricity, resistance is the term used to refer to opposition to current flow whereas impedance is the term used in AC electricity. Impedance is basically a combination of resistance and reactance. Here is the difference between resistance and impedance. Resistance Resistance is the term used to denote the opposition to … Read more

Difference between EMF and Voltage

The difference between EMF and voltage is that the EMF is the potential difference measured across a power source without a load connected to it whereas voltage is the potential difference measured between any two points in a circuit. We use the term EMF when we speak about batteries, generators, transformers, and other power sources … Read more

Difference between volts and amps | Volts vs amps

Volts and amps or ampere are two measures of electricity. Specifically, voltage is the measure of electric potential difference between two points whereas ampere is the measure of electric current. They are closely related terms and can be a bit difficult to understand. In this article, let’s learn the difference between volts and amps. What … Read more