| 摘要 |
PURPOSE:To obtain control signals which have equal firing phase and require no adjustment by inputting a part of the output from a phase signal generator to a counter through a frequency multiplier and the remaining output through a reset signal generator. CONSTITUTION:Two phase out of three phase is inputted to a phase generator 5 which synchronizes with a power source and has one output. And a part of the output signal in the phase generator is applied to a frequency multiplier 6 which consists of a phase comparator 61, a filter 62, a frequency converter 63 and a frequency demultiplier 64 and the remaining output is applied to a reset signal generator 9 which consists of a differentiator 91 and an integrator 92 and a reset signal holding unit 93. Both outputs are applied to a counter 7 and when no input is present at a reset input terminal Re, an input pulse inputs to an input terminal IN is counted and distributed in order of amplification.waveform shapers 81, 82...86. In this way, synchronization is easily performed as the output in the differentiator 91 is used as a reset signal for the counter 7. |
