Programmable Logic Controller

A Programmable Logic Controller can be defined in many ways. It can be defined as a program controlled electronic equipment with a reprogrammable memory for storing a set of commands which is used for ...

Classification of Instruments

Classification of instruments can be carried out in two categories:Absolute Instrument These instruments give the magnitude of the quantity under measurements in terms of physical constants of the instrument. The quantity to be measured ...

Methods of Measurement

Measuring instruments may be defined as device for determining the value or magnitude of quantity or variable.To know about ‘Measuring instruments’ in detail, visit http://electricalfundablog.com/blog/measuring-instrument/665/. Here in this post, we will learn about the methods ...

Null Modem cable

Null Modem Cable. A null modem cable is a form of RS-232 standard where the transmit and receive lines are cross linked. Normally a straight through serial cable is used with this kind of adapter. ...

Interface

An Interface is a common shared medium across which two different components of a computer system can exchange data or information. There are basically two types of interface:Hardware Interface Software InterfaceMajority of equipments which ...

Star Delta Starter

Star Delta starter comes under the category of starters using reduced voltage method for starting the motor. Just like all other starters, the basic aim to use this starter is to decrease initial high ...

Auto Transformer Starter

An Auto transformer starter basically uses an auto-transformer to reduce the voltage applied to a motor during its start. As we know that the starting of big motors which are used for ...

Direct online starter

The most simple and basic type of starter for motors (induction motor) is the Direct Online starter. The Direct on line starter contains an ON/OFF switch and an OLR. Here, OLR stands for overload ...

Series Motor Starter

A face plate/drum type controller is used for starting the series motor. This controller can also be used to control the speed of a series motor as well as to reverse the direction of its rotation. ...