# Step -wave converter

Discussion in 'General Electronics Chat' started by asimraufawan, Jan 30, 2009.

1. ### asimraufawan Thread Starter Member

Jul 4, 2008
29
0
Hi everyone,

I m working on an inverter design using a H-bridge configuration
to create a step-wave curve.
The voltage step is range (10,0,-10).
Four H-bridges are a=3,0,-3
b=3,0,-3
c=3,0,-3
d=1/3=1,0,-1
If there is a sine wave of 360 angle how it will be steped using the above configuration i want to develop a table which will show all 256 steps 128 on positive side & 128 on negative side with respect to all four H-bridges.

Now out of 256 combination one angle is equal to x=(1.41degree)min
x=(1.41*256degree)max
y=A Sine(x).
y will be the amplitude for each step there will be 256 steps
Now how will i know let suppose y=3.566 it is a total of all four bridges at certain degree what is the value at a,b,c&d & sum ups 3.566

Kindly help me out

2. ### Audioguru Expert

Dec 20, 2007
10,731
1,201
If an inverter used voltage steps then its Mosfets would dissipate too much heat.
High frequency Pulse-Width-Modulation is usually used instead where the Mosfets switch on on completely then switch off completely so they don't waste power getting hot.