Subject matter wherein an active solid-state device acts as if it has two or more active emitter junctions each of which is associated with a separate, equivalent transistor having an individual gain and, when initiated by a base region* current, the equivalent transistors mutually drive each other in a regenerative manner to lower the voltage drop between the emitters, and which active solid-state device can generate light.
(1) Note. If the current is above a level IH, called the "holding current*", then the device will remain ON when the triggering signal is removed by the regenerative feedback therebetween, and is then said to be "latched*".
