光学天平的读数是在光屏上读取的,所有电源为200 V或190 V的交流电。如果在光学天平的检定过程中突然停电,那么因无电源而无法读数,将严重影响天平检修工作的进行,这是我们从事天平检修的同志,特别是县级计量部门很伤脑筋的一个问题。我们在工作中摸索出了一个简便易行的办法:用手电筒电源来替代天平电源。根据多次实践证明,此办法能解 The readings of the optical balance are read on a light screen and all power supplies are 200 V or 190 V AC. If there is a sudden power failure during the test of the optical balance, it will seriously affect the maintenance work of the balance due to the lack of power supply. This is a problem that our comrades working on the balance, especially the county-level measurement department, are very worried about. We worked out a simple and easy way: replace the balance with a flashlight power supply. According to many practice proved that this solution can solve