| 摘要 |
PURPOSE:To extract even a feeble signal immediately after a high-level pulse by applying a mean signal to a mean circuit when a detected output signal exceeds the time mean signal thereof by a predetermined level. CONSTITUTION:A signal A detected and outputted with a detection circuit 1 is delayed by a time equivalent to the half of the time means of a means ciruit 3 with a delay circuit 2. The signal A is also intputted into one inlet of a selection circuit 10 while an output signal E of the mean circuit 3 for determine the time average of the output of the circuit 10 is fed back to the other inlet of the ciruit 10. The circuit 10 compares the signal A with the signal E to select the signal E when the signal A is inputted as exeeding the signal E by a predetermined level. Then, the signal E is inputted into an output circuit 11 together with the output signal C of the circuit 2 and a signal G with the controlled level is outputted. |
