| 摘要 |
PURPOSE:To bring the absolute value of the sum of transfer functions of each output to the unity by connecting sequentially the 1st inverse amplifier, the 1st and 2nd integration circuits in cascade and giving an input signal to an input terminal of the 1st inverse amplifier to obtain each output signal of high pass/ low pas/band pass from an output terminal respectively. CONSTITUTION:A resistor 23 (resistance value R) is inserted between an inverting input and an output of an operational amplifier (1st inverse amplifier) 22. The output of the operational amplifier 22 is connected to the input of an integraion circuit 11 (1st integration circuit) and an output terminal 20, and the input is connected to an input terminal 1 and an output of an integration circuit 16 (2nd integration circuit) via resistor 2 and a resistor 25 (resistance R) respectively and also connected to an output of an operational amplifier 27 (2nd inverse amplifier) via a resistor 26 (resistance R) and to an output terminal 30. The non- inverting input of the operational amplifier 27 is grounded and a resistor 28 (resistance R) is inserted between the inverting input and the output. Each output signal of low pass/high pass/band pass is obtained respectively from the output terminals 18, 20 and 30. |
