JPS6019214U - FM modulation oscillation circuit - Google Patents
FM modulation oscillation circuitInfo
- Publication number
- JPS6019214U JPS6019214U JP11032183U JP11032183U JPS6019214U JP S6019214 U JPS6019214 U JP S6019214U JP 11032183 U JP11032183 U JP 11032183U JP 11032183 U JP11032183 U JP 11032183U JP S6019214 U JPS6019214 U JP S6019214U
- Authority
- JP
- Japan
- Prior art keywords
- modulation
- oscillation circuit
- variable capacitor
- voltage variable
- coil
- 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.)
- Pending
Links
Landscapes
- Oscillators With Electromechanical Resonators (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図は従来例の回路図、第２図は同上の動作説明図、
第３図は本考案−実施例の回路図、第４ 。
図は他の実施例の回路図、第５図は同上の動作説明図で
ある。
１は水晶発振回路、１ａは水晶振動子、Ｌ、はコイル、
Ｃ１は電圧可変コンデンサ、Ｃ５は温度補償用コンデン
サ、ＬＣはレベル補正手段である。Figure 1 is a circuit diagram of a conventional example, Figure 2 is an explanatory diagram of the same operation as above,
FIG. 3 is a fourth circuit diagram of the present invention-embodiment. The figure is a circuit diagram of another embodiment, and FIG. 5 is an explanatory diagram of the same operation. 1 is a crystal oscillation circuit, 1a is a crystal resonator, L is a coil,
C1 is a voltage variable capacitor, C5 is a temperature compensation capacitor, and LC is a level correction means.
Claims (1)
印加電圧に応じて容量が変化する電圧可変コンデンサと
の直列接続し、上記コイルおよび電圧可変コンデンサに
変調入力信号を印加してＦＭ変調信号を得るようして成
るＦＭ変調発振回路において、負温度特性を有する温度
補償用コンデンサを上記電圧可変コンデンサに並列接続
するとともに、変調入力信号レベルが正温度特性となる
ように補正するレベル補正手段を設けて成るＦＭ変調発
振回路。 □A coil and a voltage variable capacitor whose capacitance changes depending on the applied voltage are connected in series to a crystal resonator of a crystal oscillation circuit that oscillates a carrier wave, and a modulation input signal is applied to the coil and voltage variable capacitor to generate an FM modulation signal. In the FM modulation oscillator circuit constructed as described above, a temperature compensation capacitor having a negative temperature characteristic is connected in parallel to the voltage variable capacitor, and a level correction means is provided for correcting the modulation input signal level so that it has a positive temperature characteristic. FM modulation oscillation circuit consisting of. □
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11032183U JPS6019214U (en) | 1983-07-15 | 1983-07-15 | FM modulation oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11032183U JPS6019214U (en) | 1983-07-15 | 1983-07-15 | FM modulation oscillation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6019214U true JPS6019214U (en) | 1985-02-09 |
Family
ID=30256617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11032183U Pending JPS6019214U (en) | 1983-07-15 | 1983-07-15 | FM modulation oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6019214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61245706A (en) * | 1985-04-24 | 1986-11-01 | Matsushita Electric Works Ltd | Crystal over-tone oscillation circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4854850A (en) * | 1971-11-09 | 1973-08-01 | ||
| JPS55118207A (en) * | 1979-03-05 | 1980-09-11 | Toshiba Corp | Non-linear type characteristic compensation system |
| JPS5628504A (en) * | 1979-08-17 | 1981-03-20 | Nec Corp | Temperature compensation type piezo-oscillator |
-
1983
- 1983-07-15 JP JP11032183U patent/JPS6019214U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4854850A (en) * | 1971-11-09 | 1973-08-01 | ||
| JPS55118207A (en) * | 1979-03-05 | 1980-09-11 | Toshiba Corp | Non-linear type characteristic compensation system |
| JPS5628504A (en) * | 1979-08-17 | 1981-03-20 | Nec Corp | Temperature compensation type piezo-oscillator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61245706A (en) * | 1985-04-24 | 1986-11-01 | Matsushita Electric Works Ltd | Crystal over-tone oscillation circuit |
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