Phaser pedals and flanger pedals will give your electric guitar a fuller sound.
Phaser pedals, or phase shifters, work by creating a series of filter peaks and modulating their center frequencies.
(Vibe pedals will give you a similar sound to a phaser pedal.)
Flanger effects pedal doubles your guitar signal and plays both back together.
Macdaddy Music sells a variety of phaser and flanger pedals from brands such as Electro-Harmonix, Keeley, Source Audio, and Dunlop/MXR.
A phaser pedal (also known as a phase shifter) adds movement by modulating the center frequencies of filter peaks.
Phaser pedals became popular back in the 1960s. This effect was used by Jimi Hendrix, Brian May, and Eddie Van Halen. EVH was fond of the Phase 90 - check out MXR EVH90 Eddie Van Halen Phase 90.
A flanger pedal is a time based delay effect that doubles your input signal and plays it back. If you lengthen the delay in your flanger it can have a chorus effect.
Like the phaser effect, flangers also rose in popularity in the late 60's. This pedal was used by the Beatles, Small Faces, and Jimi Hendrix. Eddie Van Halen also used a flanger - check out the MXR EVH-117 Eddie Van Halen Flanger that will give you some amazing Van Halen tone.
These modulation effects are usually placed on the back end of your chain.
This video will help:
