File:555 Astable Diagram.svg - Wikimedia Commons Open ...555 - Working. Positive terminal of the upper comparator of 555 is connected with reference voltage in order to turn OFF the charger if the battery charges above 13.8V.. Jasmine Jazz Takes off her Dress. November 25th, 2018 . Alisa I Beach Babe with a Killer Body. November 24th, 2018 . Stella Cox Rubs her Pussy. November 21st, 2018.