Class-A-Chopper-[One-quadrant Operation]

1) Class A Chopper is a first quadrant chopper

2) When chopper is ON, supply voltage V is connected across the load.

3) When chopper is OFF, VO = 0 and the load current continues to flow in the same direction through the FWD.

4) The average values of output voltage and current are always positive. Class A Chopper is a first quadrant chopper

5) When chopper is ON, supply voltage V is connected across the load.

6) When chopper is OFF, VO = 0 and the load current continues to flow in the same direction through the FWD.

7) The average values of output voltage and current are always positive.

8) Class A Chopper is a step-down chopper in which power always flows form source to load.

9) It is used to control the speed of dc motor.

10) The output current equations obtained in step down chopper with R-L load can be used to study the performance of Class A Chopper.