Monolithic integrable series stabilization circuit for generating a constant low voltage output

Claim 1

A monolithic integrable series stabilization circuit for generating a stabilized constant amplitude output voltage in the order of one volt from a variable amplitude input voltage comprising: a main transistor having an emitter base and collector, said emitter coupled to the input voltage and said collector coupled to the output voltage; a constant voltage transistor of conductivity type complimentary to said main transistor having an emitter base and collector, said emitter of said constant voltage transistor coupled to ground, and said base of said constant voltage transistor coupled to the collector of said constant voltage transistor; a dropping resistor coupled between said input voltage and the collector of said constant voltage transistor; an auxiliary transistor of the same conductivity type as said main transistor having an emitter, base and collector, said emitter coupled to the base of said main transistor and said collector coupled to ground; a voltage divider having a tapping point, said voltage divider having one end coupled to the output voltage; a first source of reference voltage coupled between ground and the other end of said voltage divider, said first source exhibiting a negative coefficient of voltage such that its output decreases as temperature decreases; a second source of reference voltage coupled between the base of said auxiliary transistor, the output voltage and the tapping point of said voltage divider, said second source having a positive coefficient of voltage such that its output increases as temperature increases; and means coupled between said constant voltage transistor and said second source for supplying a constant current to said second source.