{HEAD ~ The emitter circuit} of {TAIL ~ the first parasitic NPN transistor} includes a resistor, whereby the base emitter junction current densities of the parasitic NPN transistors are maintained at a preselected ratio 
{ HEAD ~ The emitter circuit } of { TAIL ~ the first parasitic NPN transistor } includes a resistor , whereby the base emitter junction current densities of the parasitic NPN transistors are maintained at a preselected ratio
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