| 摘要 |
PURPOSE:To attain low distortion and low voltage of a circuit, by providing a means suppressing a harmonic component of a recording signal not required for a magnetic recorder/reproducuer for operating a recording amplifier at a required minimum amplitude. CONSTITUTION:An output level of a video signal from an input terminal 1 is made constant at an AGC2, a luminance signal component of the output is applied to an FM modulator 5 via an LPF3 and a pre-emphasis circuit 4 and converted into an FM signal. The high frequency component is extracted from the converted FM signal at an HPF6, and the high frequency component is eliminated at the LPF and applied to a mixer 7. The color signal component is extracted from the other output of the AGC2 at the HPF or a BPF12, converted into a low frequency at a frequency conversion circuit 13, only the required component is extracted at an LPF14 and mixed with the FM signal at the mixer 7. The output of the mixer 7 is recorded on a magnetic tape 11 via a recording amplifier 8, a rotary transformer 9, and a magnetic head 10. |
