{HEAD ~ A current mirror} 110 comprising current sources 112 and 114 furnishes a current I112 to {TAIL ~ NPN transistor} 106 and a current I114 to transistor 108, and maintains currents I112 and I114 equal 
{ HEAD ~ A current mirror } 110 comprising current sources 112 and 114 furnishes a current I112 to { TAIL ~ NPN transistor } 106 and a current I114 to transistor 108 , and maintains currents I112 and I114 equal
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