Patent ID: 6600303
Filing Date: 2003-07-29
Classification: G05F,H03F

Abstract:
A current source circuit comprising:a first current path through which a first current is supplied to a first circuit from a first current source via a first terminal, said first circuit having a first device with a specific voltage-current characteristics; a second current path through which a second current is supplied to a second circuit from a second current source having the same current-drive capability as said first current source via a second terminal, said second circuit having a second device with voltage-current characteristics different from that for said first device of said first circuit, characteristic curves in the both voltage-current characteristics being crossing each other at certain voltage and current values; a third circuit connected to said first terminal, that pulls out a current from said first terminal; and a fourth circuit connected to said second terminal, that pulls out a current of the same amount as the current pulled out from said first terminal, from said second terminal, said third and said fourth circuits pulling out excess current components from said first and said second terminals, respectively, so that said first and said second currents become equal to each other.