# The number of sin waves

#### PuPuuuuu10

Joined Jun 30, 2021
21
I have a really stupied question. What kind of condition actually makes so many sin waves at the load for a power amplifier when using ads in simulation. I do not understand why just simply only one sin wave for load voltage.
Thx you a lot!
View attachment 248174

#### Ian0

Joined Aug 7, 2020
3,525
I have a really stupied question. What kind of condition actually makes so many sin waves at the load for a power amplifier when using ads in simulation. I do not understand why just simply only one sin wave for load voltage.
Thx you a lot!
View attachment 248174
Your attachment gives a 404 error.

#### drc_567

Joined Dec 29, 2008
1,156
... The posted image was originally there, but has now disappeared for some reason.
The cause of multiple sin waveforms might be due to reflections from the load. So try using a plain 50 Ω resistor as the load to see if there is any change.

#### DickCappels

Joined Aug 21, 2008
7,905
It looked to me like it was a single damped sine wave but was being displayed over and over, if that is the case, then the instrument/simulator settings that produce the waveform should be examined.