| 摘要 |
PURPOSE:To convert plural types of basic pilot signals of square waves into sine waves of even amplitude without using a resonance circuit and to deliver these sine waves, by converting the basic pilot signal of a square wave into a triangular wave through an integration circuit and then converting the triangular wave into a sine wave through a polygonal line function generating circuit. CONSTITUTION:A circuit 1 produces the clock signal CP through a PLL constitution and divided to produce basic pilot signals fP1-fP4. Then the signal selected by a switching head signal SH is delivered from a switch circuit 4. The output signal of the circuit 4 is converted into triangular wave signals f1'- f4' by an integration circuit 5 of a Miller integration constitution. These signals f1'-f4' are supplied to a polygonal line function generating circuit 6 and converted into sine waves to be delivered. |
