I made this prototype booster this weekend. It's an inline booster using the TI 4050c. It is not variable voltage, just a fixed 5 volts. It works really good. I wanted to make it portable so I could use it on any of my mods. I used 1/2" coupler and end caps with just enough 1/2" pipe to hold it together. It looks big (tall) but it's only slightly longer than an ego with an ego booster. It hits like a champ.
Greg

Greg