| 摘要 |
PURPOSE:To obtain a linear relation between pulse widths of input and output pulse signals by comparing a 1st voltage proportional to a pulse width of a 1st pulse with a 2nd voltage proportional to a pulse width of a 2nd pulse and controlling the 2nd pulse width depending on the difference between the 1st and 2nd voltages. CONSTITUTION:A voltage proportional to a pulse width of an input pulse signal and a voltage proportional to a pulse width of an output signal of the circuit are compared with a 2nd comparator 5, from which a difference is generated. A pulse delayed by a voltage delay circuit for the amount of the difference is inputted to a 1st comparator circuit 3, then the pulse width of the delayed pulse signal by a delay circuit 2 is set the same as the pulse width of the input pulse signal and obtained from an output terminal OUT. Thus, even when the circuit constant of the delay time of the delay circuit 2 or the like or the pulse width of the input pulse signal is changed, it is not required to reset the circuit constant for each occasion different from a conventional circuit and the pulse widths of the input and output pulse signals are made automatically identical or in the relation set by the circuit constant. |
