| 摘要 |
PURPOSE:To obtain a drive output current of low distortion factor by adding a resistor to an output stage of a current driving amplifier. CONSTITUTION:A collector of a PNP transistor (TR) 23 and a base of an NPN TR 24 are connected, a resistor 38 is connected between the base and emitter of the NPN TR 24. A collector of a PNP TR 30 and a base of an NPN TR 31 are connected and a resistor 39 is connected between the base and collector of the NPN TR 31. Thus, a collector current of the PNP TR flows much constantly, the effect of a current amplification factor at an NPN TR of a complementary PNP TR is decreased to improve the distortion factor at high frequencies.
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