### Back to the simple things; Multiply a sine wave by 3

Posted:

**Thu Mar 19, 2020 7:11 pm***** Check out my last post, I added 10 sine`s ,1f to 10f !

Hello gang,

We all know we can easily multiply a sine wave to get double the frequency, but have you ever tried multiplying a sine wave by 3 to get 3 times the frequency ? Well here is a simple circuit I came up with. It works across the entire audio frequency range and as you can see by the frequency analysis we get a perfect sine wave out. It does also work with a triangle wave for 3 times the frequency, but you do NOT get a triangle wave out, so it's like a wave shaper at 3 times the frequency. Hope someone can make use of this, and please do make comments and suggestions.

Later then, BobF.....

P.S., Yes, you can of course remove the frequency readout if you wish!

Hello gang,

We all know we can easily multiply a sine wave to get double the frequency, but have you ever tried multiplying a sine wave by 3 to get 3 times the frequency ? Well here is a simple circuit I came up with. It works across the entire audio frequency range and as you can see by the frequency analysis we get a perfect sine wave out. It does also work with a triangle wave for 3 times the frequency, but you do NOT get a triangle wave out, so it's like a wave shaper at 3 times the frequency. Hope someone can make use of this, and please do make comments and suggestions.

Later then, BobF.....

P.S., Yes, you can of course remove the frequency readout if you wish!