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笔者对钟控收音机一直情有独钟。前段时间在二手电子市场上,发现了一款SONY ICF-C25型钟控收音机,外观精致,功能也多,于是毫不犹豫地购回一台。但SONY ICF-C25型收音机供电电压为110V,需改为220V才能使用;日本电网频率为60Hz(我国为50Hz),因此还需把电子钟的计时取样频率由60Hz改为50Hz,否则电子钟会走时不准(每分钟慢10秒)。具体改制方法如下: 第一步:改供电电压。打开机壳,用烙铁焊开电源线与电源变压器初级线圈的任意一端。将一只0.33μF/630V的CBB电
I have been fond of bell radio. Some time ago in the second-hand electronics market, found a SONY ICF-C25-type clock radio, the appearance of sophisticated, multi-function, so did not hesitate to buy back one. However, SONY ICF-C25 type radio supply voltage is 110V, need to be changed to 220V to use; Japan grid frequency is 60Hz (China is 50Hz), so the need for electronic clock timing sampling frequency from 60Hz to 50Hz, or electronic clock Travel time is not allowed (slow 10 seconds per minute). Specific restructuring methods are as follows: The first step: change the supply voltage. Open the case, with a soldering iron to open the power cord and power transformer at either end of the primary coil. A 0.33μF / 630V CBB is charged