Top definition
Part of a circuit formed with a unijunction transistor and a capacitor. It creates a triangle wave and can be used as a timer instead of a 555 timer.

Why exactly you would look up this "smart" thing on urban dictionary is a long mystery.
He used a Unijunction Transistor relaxation Oscillator to create a flashing light to annoy his friends while they slept.
by zbx March 04, 2012
Get the mug
Get a Unijunction Transistor Relaxation Oscillator mug for your mate Callisto.