Found in a Motorola documentation from the 70s, this circuit makes use of transistors of the time. Modern equivalents can be used. The diode also supports an equivalent.
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®...