Found in General Electric's documentation from 1970, this circuit is indicated for the so-called “Solid State Lamp” (SSL). The LED symbol in the original diagram is inverted.
The circuit shown in the figure below is suggested by ON Semiconductor (www.onsemi.com), based on...
This circuit is part of an article published in the March 1990 issue of Radio Electronics...
September 2016 - It can be obtained from Mouser Electronics the new ADC AD7779 from Analog Devices with...