JPS59164320U - FM modulation circuit - Google Patents
FM modulation circuitInfo
- Publication number
- JPS59164320U JPS59164320U JP5693983U JP5693983U JPS59164320U JP S59164320 U JPS59164320 U JP S59164320U JP 5693983 U JP5693983 U JP 5693983U JP 5693983 U JP5693983 U JP 5693983U JP S59164320 U JPS59164320 U JP S59164320U
- Authority
- JP
- Japan
- Prior art keywords
- modulation circuit
- resonant
- modulation
- circuit
- frequencies
- 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
- 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図は従来例の回路図、第２図は他の従来例の回路図
、第３図は本考案の一実施例の回路図である。
１は変調信号入力端子、６は発振周波数切換回路、Ｔｒ
１〜Ｔｒ４はトランジスタ、Ｃ１，Ｃ３はコンデンサ、
Ｌｌ、Ｌ２はコイルである。FIG. 1 is a circuit diagram of a conventional example, FIG. 2 is a circuit diagram of another conventional example, and FIG. 3 is a circuit diagram of an embodiment of the present invention. 1 is a modulation signal input terminal, 6 is an oscillation frequency switching circuit, Tr
1 to Tr4 are transistors, C1 and C3 are capacitors,
Ll and L2 are coils.
Claims (1)
調信号入力端子からの入力信号に応じて周波数変調され
た信号を出力するＦＭ変調回路において、共振周波数の
異なる複数個のＬＣ共振回路を周波数切換制御用のトラ
ンジスタを介して並列接続した発振周波数切換回路を設
けて成るＦＭ変調回路。In an FM modulation circuit that includes an LC resonant circuit and a transistor for self-excited oscillation and outputs a frequency-modulated signal according to an input signal from a modulation signal input terminal, a plurality of LC resonant circuits having different resonant frequencies are connected to each other at different frequencies. An FM modulation circuit comprising oscillation frequency switching circuits connected in parallel via switching control transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5693983U JPS59164320U (en) | 1983-04-15 | 1983-04-15 | FM modulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5693983U JPS59164320U (en) | 1983-04-15 | 1983-04-15 | FM modulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59164320U true JPS59164320U (en) | 1984-11-05 |
Family
ID=30187255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5693983U Pending JPS59164320U (en) | 1983-04-15 | 1983-04-15 | FM modulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59164320U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5017956A (en) * | 1973-06-19 | 1975-02-25 |
-
1983
- 1983-04-15 JP JP5693983U patent/JPS59164320U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5017956A (en) * | 1973-06-19 | 1975-02-25 |
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