First quadrant or class a chopper, Electrical Engineering

First Quadrant or Class A chopper

A chopper  two mode operation of class  A chopper  can be explained as follow.

 

561_first.PNG

                                                             Figure class A  chopper  circuit  V0- I0 characteristic

Mode I 

When  the chopper switch  is on V0= Vs  and current  flows in the direction  in this mode  V0 and I0  will be  positive.

Mode II

When the chopper SW  is OFFF V0 = 0 (Since  diode  act like short Circuit). Now  the inductor present in the load releases its energy and  maintain the current in  the same direction through  the freewheeling diode FD.  Again the V0  and I0 will be  positive. This  operation is shown in by the hatched area in figur.

 

 

Posted Date: 4/3/2013 12:32:36 AM | Location : United States







Related Discussions:- First quadrant or class a chopper, Assignment Help, Ask Question on First quadrant or class a chopper, Get Answer, Expert's Help, First quadrant or class a chopper Discussions

Write discussion on First quadrant or class a chopper
Your posts are moderated
Related Questions
(a) Carry out a topological analysis for the circuit shown in Figure 1.     (i) Construct a graph for the circuit  (ii) State the different trees you can choose.    (b) Us

Q. A shift register can be used as a binary (a) divide- by-2, and (b) multiply-by-2 counter. Explain. Q. Show a block diagram of a 4-bit shift-right register using JKFFs.

Q. Counting to moduli other than 2 is a frequent requirement, the most common being to count through the binary-coded decimal (BCD) 8421 sequence. All that is required is a four-st

1- Use 4-to-16 decoder and some residue gates to recognize the following functions F1(A,B,C)= S(1,2,4,5,7) F2(A,B,C,D)= S(1,2,4,5,7,10,12,14,15) F3(A,B,C,D,E)= S(1,2,4,5,7,10,12,1



Given that a BJT has β = 60, an operating point defined by I CQ = 2.5 mA, and an Early voltage V A = 50 V. Find the small-signal equivalent circuit parameters g m , r o , and rπ.

The sinusoidal voltage source in the circuit shown in Fig. is developing an rms voltage of 2000 V. The 4 ? load in the circuit is absorbing four times as much average power as the

Q. What is Output Impedance? Output Impedance : The output impedance of an amplifier is a measure of the impedance or resistance. It has nothing to do with the actual loading t

General  Purpose  Registers Registers B, C ,D, E H , and L   are 8 bit  general  purpose  registers. These  registers store  8 bit  data  temporarily  for processing. Some