Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Advanced SPWM ( two level and three level)

Hi dear All
Thank you for reading my blogs.
I came back again ! ;-)
As i gave promise , i came back to continue about class D amplifier and SMPS !
See below , pictures , please :
SPWM1.JPG


SPWM2.JPG


SPWM3.JPG


Circuitry.JPG


Think about top photos !
Could you get my mean ?
If yes , good .
If no , no , don't worry !
The 1st , photo , is a three level SPWM ( the put put of two LM311 as a float out put !)
The message signal , is a sine wave when we want create SPWM ( sinusoidal pulse width modulation)
But here , it has a simple difference ! we have 2 identical sine wave , one of them is in phase , and the other , is out of phase ( 180 degree ) .
See the circuitry , please .
And about 2nd photo : you can see , what i did , exactly !
And about 3rd photo : those are the out put signals of each comparator .
Ok try to think about those photos , and what i want to say !
I'll come back with more things! stay tuned !
Wish you the best
Goldsmith

Comments

Part and Inventory Search

Blog entry information

Author
goldsmith
Read time
1 min read
Views
872
Comments
1
Last update

More entries in Uncategorized

More entries from goldsmith

Share this entry

Back
Top