JPS60127017U - FM modulated wave deviation width control circuit - Google Patents
FM modulated wave deviation width control circuitInfo
- Publication number
- JPS60127017U JPS60127017U JP1284384U JP1284384U JPS60127017U JP S60127017 U JPS60127017 U JP S60127017U JP 1284384 U JP1284384 U JP 1284384U JP 1284384 U JP1284384 U JP 1284384U JP S60127017 U JPS60127017 U JP S60127017U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- modulated wave
- control circuit
- width control
- deviation width
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Transmitters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のＦＭ変調波のレベル制御回路のブロック
図、第２図は本考案の一実施例になるＦＭ変調波のレベ
ル制御回路のブロック図を夫々示す。
４・・・制御装置（音量）、７・・・分周器、８・・・
ミキサ回路、９・・・電圧制御発振器（ＶＣＯ）、１０
・・・ローパスフィルタ（ＬＰＦ）、１１・・・位相比
較回路、１２・・・ブリスケラー、１３・・・プログラ
マブル分周器、１４・・・マイコン。FIG. 1 is a block diagram of a conventional FM modulated wave level control circuit, and FIG. 2 is a block diagram of an FM modulated wave level control circuit according to an embodiment of the present invention. 4... Control device (volume), 7... Frequency divider, 8...
Mixer circuit, 9... Voltage controlled oscillator (VCO), 10
...Low pass filter (LPF), 11... Phase comparator circuit, 12... Briskeller, 13... Programmable frequency divider, 14... Microcomputer.
Claims (1)
Ｎに分周する分周器と、この分周器の出力信号とｆＯ−
（１−１／Ｎ）の周波数の信号とを混合するミキサ回路
とからなり、該分周比１７Ｎを可変する事により、該分
周器で該周波数被変調波の偏移中を可変して、該周波数
被変調波の復調信号゛ のレベルを可変する様にした事
を特徴とするＦＭ変調波の偏移中制御回路。A frequency modulated wave having a carrier frequency fo is divided by a frequency division ratio of 1/
A frequency divider that divides the frequency into N, the output signal of this frequency divider, and fO−
It consists of a mixer circuit that mixes a signal with a frequency of (1-1/N), and by varying the frequency division ratio of 17N, the frequency divider can vary the deviation of the frequency modulated wave. , a control circuit for controlling an FM modulated wave during shift, characterized in that the level of the demodulated signal of the frequency modulated wave is varied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1284384U JPS60127017U (en) | 1984-01-31 | 1984-01-31 | FM modulated wave deviation width control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1284384U JPS60127017U (en) | 1984-01-31 | 1984-01-31 | FM modulated wave deviation width control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60127017U true JPS60127017U (en) | 1985-08-27 |
| JPH0314812Y2 JPH0314812Y2 (en) | 1991-04-02 |
Family
ID=30496290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1284384U Granted JPS60127017U (en) | 1984-01-31 | 1984-01-31 | FM modulated wave deviation width control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60127017U (en) |
-
1984
- 1984-01-31 JP JP1284384U patent/JPS60127017U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0314812Y2 (en) | 1991-04-02 |
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