| 摘要 |
PROBLEM TO BE SOLVED: To perform the start appropriately by minimizing the output pulse at the starting stage to be supplied to a coil, and enlarging the output pulses in order more than the previous output, thereby increasing the amplitude of a needle to the specified amplitude. SOLUTION: At start, starting is performed in the starting procedure present in a start setter 50. In this setting the output pulses at the initial stage of starting to be supplied to the coil 11 of an electromagnetic minimized, and then the output pulses are enlarge more than the pervious output is average, whereby the amplitude of the needle is increased gradually, and then it is shifted into normal operation mode geared to the output of a sensor 39. Then rate of enlarging the output pulses more than the previous output is decreased at the point of time when the amplitude of the needle reaches the smaller amplitude than the specified amplitude, an when it reaches the specified point, it is shifted to normal mode, whereupon it can be smoothly connected to the normal operation mode to perform the oscillation of specified amplitude. Hereby, the start can be performed appropriately. |
