Square + triangle = sine (almost)

 

If a squarewave contains all odd harmonics of the fundamental
frequency, and a triangle all even, will I get ALL harmonics if I mix
the two waveforms?

It looks like a cross between a squarewave and sinewave.

I have not seen any tech references to the practical value of this.
Does it have any?

For example, to roughly approximate a sinewave without filtering.

Harold Larsen

 


"Harold Larsen"

 **  Sorry  -   that is  WRONG .

 A triangle wave contains only odd harmonics too.

http://en.wikipedia.org/wiki/Triangle_wave

A "sawtooth" wave contains all integer harmonics.



....  Phil

 

wrote:


OK thanks for the pull-up, but how about using a triangle-square wave
mix, in place of a filter, to simulate a sinewave .

I have not seen that method applied or described anywhere, but it
makes a fair approximation, at least to my eye.

Harold Larsen

 


"Ron Tanner"
 "Phil Allison"

 ** Maybe you need better eyes.

Ever noticed how sine waves are flat topped and pass through zero at a 45
degree angle ?

Not much like your hut with pitched roof wave.......



.....  Phil

 

Phil Allison schrieb:

In Gemany, the angle is 56.789 degrees, because the mains voltage is
higher...

Frank