![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/0/05/IdealMixer.svg/640px-IdealMixer.svg.png&w=640&q=50)
Frequency mixer
Circuit that creates new frequencies from two signals / From Wikipedia, the free encyclopedia
In electronics, a mixer, or frequency mixer, is an electrical circuit that creates new frequencies from two signals applied to it. In its most common application, two signals are applied to a mixer, and it produces new signals at the sum and difference of the original frequencies. Other frequency components may also be produced in a practical frequency mixer.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/0/05/IdealMixer.svg/320px-IdealMixer.svg.png)
Mixers are widely used to shift signals from one frequency range to another, a process known as heterodyning, for convenience in transmission or further signal processing. For example, a key component of a superheterodyne receiver is a mixer used to move received signals to a common intermediate frequency. Frequency mixers are also used to modulate a carrier signal in radio transmitters.