Guitar Phaser-Tremolo with a LM386 and a 555 timer chip - YouTube
Amazon.com: SAPHUE Vintage Phaser Guitar Effects Pedal Speed Knob Effect Pedals with Steel Metal Shell Mini Single Type Dc 9V with True Bypass Switch for Multi Electric Guitar Kit : Musical Instruments
Carlin Phaser: LDR values?
I built the Circulator Phaser/Vibrato pedal from PedalPCB.… | Flickr
Guitar FX Layouts: Foxx / Sears Phasing Pedal
Best Phaser Pedals: Ultimate Buyer's Guide to Phasers - Guitar Gear Finder