saviourwin 发表于 2010-3-31 12:55:55

急切求助~~~懂些电路的朋友进

此机是不是只要按下图中按钮就可以把电路在115~230v之间调节???
是不是只需要按这一个按钮???
不太敢尝试来问下各位朋友~~~
谢谢

asdffx 发表于 2010-3-31 13:08:36

正常就是了,最好发email问问原厂吧,或者看看说明书

wzchen 发表于 2010-3-31 13:14:02

拨过去,如果从原来显示115变为现实230的字样,则就对了。否则就不对。

lovemusicli 发表于 2010-3-31 13:29:43

berkeley audio的啥东西?

saviourwin 发表于 2010-3-31 13:53:58

Thank you for writing and for your purchase of an Alpha DAC.

To convert an Alpha DAC from 115V operation to 230V operation, two things must be done:

1. Move voltage switch SW1 on the power supply PCB from the 115V position to the 230V position.

2. Change mains fuse F1 on the power supply PCB from a 5 mm x 20 mm .5A Slow Blow (Littlefuse 0239.500HXP) to a 5 mm x 20 mm .25A Slow Blow (Littlefuse 0239.250HXP).

Someone with technical experience should perform the voltage change. If switch F1 is in the wrong position and/or fuse F1 is the wrong type or value for the local AC mains voltage, the Alpha DAC may be damaged and the warranty will be void.

I hope I have answered your question satisfactorily. Please let me know if you have any further questions

right 发表于 2010-3-31 13:59:11

这不是回信说得蛮清楚了,1是拨动开关,2是换保险管。

saviourwin 发表于 2010-3-31 14:26:53

上面写着是换0.25a的保险丝是吧

right 发表于 2010-3-31 14:53:06

是的,0.25A的。

其实不用他们说明保险丝,想都能想到的。功率W=I*U,当W不变而只有电压变了,则当W=0.5*110,于是W=0.25*220;故保险应换为0.25的。(哈,不用解这个方程吧)

saviourwin 发表于 2010-3-31 18:59:50

谢楼上的朋友了

purer 发表于 2010-4-1 12:28:23

保险换不换都问题不大的.把开关整到230就可以了:lol

渔歌 发表于 2010-4-1 16:16:31

哈米东西?
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