JPH03413U - - Google Patents
Info
- Publication number
- JPH03413U JPH03413U JP6124689U JP6124689U JPH03413U JP H03413 U JPH03413 U JP H03413U JP 6124689 U JP6124689 U JP 6124689U JP 6124689 U JP6124689 U JP 6124689U JP H03413 U JPH03413 U JP H03413U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- coupling capacitor
- variable
- oscillator
- variable frequency
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案に係る可変周波数発振器の一実
施例を示す構成ブロツク図、第２図は第１図装置
の位相の周波数特性を示す図、第３図は第１図装
置の具体的回路構成例を示す回路構成図、第４図
は本考案に係る可変周波数発振器の第２の実施例
を示す構成ブロツク図、第５図は本考案にかかる
可変周波数発振器の第３の実施例を示す構成回路
図、第６図は第５図装置の一部の等価回路を示す
図、第７図および第８図は第５図装置の動作特性
を示す図、第９図は従来の可変周波数発振器を示
す構成ブロツク図、第１０図および第１１図は第
９図の可変周波数発振器の動作特性を示す図、第
１２図は第９図および第１図における可変周波数
発振器の動作特性を示す図、第１３図は第９図装
置の具体的回路例を示す構成回路図、第１４図は
その動作特性を示す図である。
１……増幅回路、２，５，Ｃ３，Ｃ７，Ｃ８…
…結合キヤパシタ、３，Ｃ９……可変容量キヤパ
シタ、４，Ｌ１……インダクタンス、６，７，Ｒ
５，Ｒ１３……抵抗。
Fig. 1 is a block diagram showing an embodiment of the variable frequency oscillator according to the present invention, Fig. 2 is a diagram showing the phase frequency characteristics of the device shown in Fig. 1, and Fig. 3 is a specific circuit of the device shown in Fig. 1. A circuit configuration diagram showing a configuration example, FIG. 4 is a configuration block diagram showing a second embodiment of the variable frequency oscillator according to the present invention, and FIG. 5 shows a third embodiment of the variable frequency oscillator according to the present invention. Component circuit diagram, FIG. 6 shows an equivalent circuit of a part of the device shown in FIG. 5, FIGS. 7 and 8 show operating characteristics of the device shown in FIG. 5, and FIG. 9 shows a conventional variable frequency oscillator. FIGS. 10 and 11 are diagrams showing the operating characteristics of the variable frequency oscillator in FIG. 9, FIG. 12 is a diagram showing the operating characteristics of the variable frequency oscillator in FIGS. 9 and 1, FIG. 13 is a configuration circuit diagram showing a specific example of the circuit of the device shown in FIG. 9, and FIG. 14 is a diagram showing its operating characteristics. 1...Amplification circuit, 2, 5, C3 , C7 , C8 ...
...Coupling capacitor, 3,C 9 ...Variable capacitor, 4,L 1 ...Inductance, 6,7,R
5, R13 ...Resistance.
Claims (1)
、前記増幅回路と前記ＬＣ共振回路を接続する結
合キヤパシタとからなる可変周波数発振器におい
て、結合キヤパシタと並列に抵抗を接続したこと
を特徴とする可変周波数発振器。 A variable frequency oscillator comprising an amplifier circuit, an LC resonant circuit whose resonance frequency is variable, and a coupling capacitor connecting the amplifier circuit and the LC resonance circuit, characterized in that a resistor is connected in parallel with the coupling capacitor. oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6124689U JPH03413U (en) | 1989-05-26 | 1989-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6124689U JPH03413U (en) | 1989-05-26 | 1989-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03413U true JPH03413U (en) | 1991-01-07 |
Family
ID=31589328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6124689U Pending JPH03413U (en) | 1989-05-26 | 1989-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03413U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146908U (en) * | 1974-05-02 | 1975-12-05 | ||
| JPS5137415U (en) * | 1974-09-09 | 1976-03-19 | ||
| JPS53114513U (en) * | 1977-02-16 | 1978-09-12 |
-
1989
- 1989-05-26 JP JP6124689U patent/JPH03413U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146908U (en) * | 1974-05-02 | 1975-12-05 | ||
| JPS5137415U (en) * | 1974-09-09 | 1976-03-19 | ||
| JPS53114513U (en) * | 1977-02-16 | 1978-09-12 |