9V 线扣 铜150mm 9V, 2.6A STEP-DOWN VOLTAGE REG. D36V28F9 9V, 2.9A STEP-DOWN VOLTAGE REGULATOR D30 9V, 5A STEP-DOWN VOLT REG. D36V50F9 9V, 600MA STEP-DOWN VOLTAGE REGULATOR 9V1 1W 9V139 9V1A 9V1A-21-NEG-WALL 9V1A-21-POS-WALL