Electronics

Class-C or Type-C Chopper is a category of chopper which can operate in first as well as second quadrant. This basically means that, the power can either flow from source to load or load to source in this chopper. This kind of chopper is also known as Two Quadrant Class-A chopper. In this article, we … Read more

Introduction: Class-B or Type-B chopper is defined as the chopper in which the direction of power flow is always from load to source. The operation of this chopper is confined in the second quadrant. This is the reason; it is also known as Second Quadrant Chopper. In second quadrant chopper, the output voltage is positive … Read more

Class-A or Type-A chopper is defined as the chopper in which the direction of power flow is always from source to load. The operation of this chopper is always in first quadrant. This is the reason; it is also known as First Quadrant Chopper. In this type of chopper, the output voltage and load current … Read more

The quadrant operation of chopper is basically the circuit configuration so adjusted to achieve the chopper voltage Vo and output current Io in all the four quadrants. A chopper can be operated in all four quadrants by employing required circuit configuration.   We know that, a chopper is a semiconductor power electronic device. Again, a … Read more

This article outlines the definition, working principle and derivation & formula for average output voltage of a Step-down Chopper. The working principle has been discussed in detail with the help of circuit diagram & output voltage waveform. Definition: A Step-down chopper is a static device that step downs its DC input voltage. The value of … Read more

This article describes the advantage and disadvantage of GTO ( Gate Turn Off Thyristor) over conventional thyristor or SCR. Disadvantage: Following are the disadvantage of a GTO as compared to a conventional thyristor: The magnitude of latching and holding current is more than that of a SCR. The value of latching current is around 2 … Read more

Switching characteristics of a Gate Turn Off Thyristor or GTO comprises of dynamic characteristics during Turn ON and Turn OFF process. It basically represents the variation in anode voltage Va and anode current Ia when either positive or negative gate signal Ig is applied. Turn On Characteristic of GTO: Turn on process in GTO is … Read more

What is Gate Turn Off Thyristor (GTO)? A Gate Turn Off Thyristor (GTO) is a power semiconductor device which can be turned ON and OFF by applying gate current. It is basically a pn pn device which is tuned ON by applying positive gate current and turned off by negative gate current at its gate … Read more

The main difference between a step-up and step-down chopper is that average value of output voltage of former is greater than its input DC voltage whereas it is less than the DC input voltage for latter. This is the basic but major functional difference between the two. Step-down and step-up choppers are static devices which … Read more

Definition: Step-up chopper is a static device whose average output DC voltage is greater than its input DC voltage. It is different from the step-down chopper. In step-down chopper, the average value of output voltage stepped down i.e. it is less than its input voltage. Working Principle of Step-up Chopper: To understand the working principle, … Read more