Recommended
Scam power saver plug - the 2024 edition.
Why people recommend it
Big Clive's teardown is cited as evidence that these heavily advertised capacitor-style gadgets are a scam, with a potted part that does almost nothing.
Watch for: a warning against buying, not a build guide
In their words
Big Clive (video) routinely takes these things apart, and in some of them, even the capacitor is fake!
gbarry on electronics.stackexchange.com, Dec 2025. CC BY-SA.
