Sinestro's ring was originally charged by attacking Green Lanterns, presumably to tap into the yellow light of fear provided by Parallax who was trapped in the Green Lantern's Central …

Sinestro wields a yellow power ring that is functionally similar to those of the Green Lanterns, granting him flight, the ability to survive in any environment and the ability to create constructs …

Formerly known as a Qwardian ring, this extremely powerful object is comparable to a Green Lantern Ring. It can also be called a yellow power ring.

When he returned, he wielded a power ring which used yellow energy. After various encounters with Earth's Green Lantern, Hal Jordan, he was imprisoned within the Central Power Battery. …

As the host to the Paralax entity Sinestro is able to use the abilities of the Sinestro Power Ring on a much larger scale.

Green Lantern Blackest Night Sinestro Corps Yellow Lantern Logo Silver Plated Adjustable Novelty Ring

They created the Yellow Power Ring, designed to project yellow energy and take advantage of the Green Lanterns weakness. Sinestro was able to use his ring, which used fear as a power …

In the MMORPG DC Universe Online, it was said Sinestro was expelled from the Green Lantern Corps and as an act of revenge he got the fear/yellow ring and created his own Yellow Lantern …