Crystal oscillator
From Wookieepedia, the Star Wars wiki.
A Crystal oscillator was a device that regulated power on some starships. One was used on the Towani family's starcruiser when in crashed on Endor. It was stolen by Terak. A similar device was employed by Salek Weet and Noa Briqualon in their starship; the crystal in this device was shattered during the crash, stranding the two scouts on the moon.
