Found in a documentation from the 90's, this circuit uses only one integrated circuit. The resistors in series with the LEDs depend on the power that can be between 5 and 12 V.
April 2017 - Mouser Electronics is making available this new component for open LED protection...
This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine....
October 17, 2016 - Mouser Electronics, Inc. is now offering the Blue Gecko BGM113 Bluetooth®...