| 摘要 |
PURPOSE:To establish the frequency characteristic adjusting circuit with a given performance without using filters of complicated constitution, by combining addition circuit, feed forward circuit and feed back circuit. CONSTITUTION:The input terminal 17 is connected to one input terminal of the first adder 11. The output 21 of the adder 11 is branched into two, and one is grounded via the series circuit of the series circuit consisting of the variable resistor 12 and capacitor 13 and the parallel circuit consisting of the variable resistor 14 and capacitor 15. The junction 20 of the series circuit is branched into two, one is fed to one input terminal of the second adder 19 via the feed forward circuit 22 and another is fed to another input terminal of the adder 11 via the feed back circuit 16. The output 21 is fed to one input terminal of the adder 19 and it is led out at the output terminal 18 of the adder 19. |
