| 摘要 |
PURPOSE:To improve an operation speed and reduce power consumption by forming plural transistors (TR) and plural resistances previously in the space where emitter follower circuits are formed, and switching them according to load capacity. CONSTITUTION:Transistor TRs Qa and Qb and resistances Ra and Rb are closely formed previously corresponding to emitter follower circuits EF1 and EF2. Then, combinations of the TRs Qa and Qb and resistances Ra and Rb are switched properly according to the connected load capacity. Thus, the emitter follower circuits where a current corresponding to the load capacity flows are formed. Consequently, the operation speed is improved and the power consumption is reduced. |
