Technical Editor, Author at Polytechnic Hub

Advantages and disadvantages of thermistor

There are some advantages of thermistor which are given below. The thermistor has fast response over narrow temperature range. It is small in size. Contact and lead resistance problem not…

Technical Editor July 12, 2017

Electronics Articles

What is thermistor?

Thermistor is short form of thermal resistor and it is thermally sensitive resistor. A thermistor is a temperature-sensing element composed of sintered semiconductor material which exhibits a large change in resistance…

Technical Editor July 11, 2017

Electronics Articles

Advantages and disadvantages of resistance temperature detector (RTD)

There are some advantages of resistance temperature detector (RTD) which are given below. The accuracy of RTD is good. Temperature compensation is not necessary. The RTD available in wide range.…

Technical Editor July 8, 2017

Electronics Articles

Advantages and disadvantages of bimetallic thermometer

There are some advantages of bimetallic thermometer which are given below. • The bimetallic thermometer is easily installed and maintained. • Wide temperature ranges are available. • The bimetallic thermometer…

Technical Editor July 8, 2017

Electronics Articles

Bimetallic thermometer

The bimetallic thermometers are made up of bimetallic strips formed by joining two different metals having different thermal expansion coefficients. Basically, bimetallic strip is a mechanical element which can sense…

Technical Editor July 8, 2017

Electronics Articles

What is Solar cell?

A solar cell is also known as photovoltaic cell. The Solar cell is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect which is a physical and chemical phenomenon. It is a form of photoelectric…

Technical Editor July 8, 2017

Electronics Articles

What is gunn diode?

The Gunn diode does not contain a PN diode junction. A Gunn diode is also called as a TED (transferred electron device). The Gunn diode or transferred electron device (TED) can be…

Technical Editor July 8, 2017

Electronics Articles

What are the dynamic characteristics of instrument?

The behavior of such a system, where as the input varies from instant to instant, the output also varies is known as dynamic response of the systems. Hence, the dynamic…

Technical Editor July 8, 2017

Electronics Articles

Advantages, disadvantages and applications of rotameter

There are some advantages of rotameter which are given below. The cost of rotameter is low. It provides linear scale. It has good accuracy for low and medium flow rates.…

Technical Editor July 8, 2017

Electronics Articles

What are hygrometer and its types?

Hygrometer is an instrument used for measuring the value of humidity. It is also known as psychrometer. Generally, the output of hygrometer is used to indicate relative humidity. Several material…

Technical Editor July 8, 2017