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A diode-connected transistor is a method of creating a two-terminal rectifying device (a diode) out of a three-terminal transistor. A characteristic of diode-connected transistors is that they are always in the saturation region for MOSFETs and in the active region for BJTs. A diode-connected transistor is made by *connecting the base and collector of a BJT *connecting the drain and source of a JFET〔http://www.ti.com/lit/an/sboa058/sboa058.pdf〕 *connecting the gate and drain of a MOSFET Diode-connected transistors are used in current mirrors to provide a voltage drop that tracks that of the other transistor as temperature changes.〔http://electronics.stackexchange.com/questions/50633/transistor-configured-as-diode〕 They also have very low reverse leakage currents〔http://electronicscircuit1.blogspot.com/2009/03/common-circuit-applicationjfet-diode.html〕 ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Diode-connected transistor」の詳細全文を読む スポンサード リンク
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