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FuelShark SCAM - Car Fuel Saver / Economizer - Teardown & Schematic
FuelShark, also called car fuel saver or economizer, is a miraculous device that claims to save 20% or more of fuel. Just plug it into the cigarette lighter socket of your car and you magically save 20% of gas. It also saves oil, battery life and environment and even increases the power of your engine! This is what the sellers claim. In reality, this is just a tiny 1000uF capacitor (rated 25V) connected in parallel with car mains. Fortunately there’s also a 2A fuse. There's also an indicator LED with two 1k resistors in series (they could have used one) and a 1.5M discharging resistor. I have no idea how this is supposed to save 20% of your fuel and why the car manufacturers don't put this already into all cars :). But at least, this is a nice flashlight and it tells all passengers that you are an expert :).
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