JPS613488U - FM transmitter circuit for fish finder - Google Patents
FM transmitter circuit for fish finderInfo
- Publication number
- JPS613488U JPS613488U JP8719484U JP8719484U JPS613488U JP S613488 U JPS613488 U JP S613488U JP 8719484 U JP8719484 U JP 8719484U JP 8719484 U JP8719484 U JP 8719484U JP S613488 U JPS613488 U JP S613488U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- fish finder
- circuit
- transmitter circuit
- changing
- 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
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (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図は本考案の一実施例を示す回路図、第２図は第１
図の発振回路の主要部を示す回路図、第３図は第２図の
回路におけるコンデンサＣＴの端子電圧を示す波形図、
および第４図は、第表図お．よび第２図の回路の動作を
説明するための波形図である。
１・・・電源電圧入力端子、２・・・送信トリガ一人力
端子、３・・・コントローラＩＣ， ４・・・パワー
トランジスタ回路、ＴＰ・・・トリガーパルス、ＰＬ・
・・低レベル期間、ＰＨ・・・高レベル期間、ｖｃ・・
・コンデンサＣ１の端子電圧、α；１，ＯＳ２・・・発
振回路出力。Fig. 1 is a circuit diagram showing one embodiment of the present invention, and Fig. 2 is a circuit diagram showing an embodiment of the present invention.
A circuit diagram showing the main parts of the oscillation circuit shown in Fig. 3, a waveform diagram showing the terminal voltage of the capacitor CT in the circuit shown in Fig. 2,
and Figure 4 are shown in Table 1. and FIG. 3 is a waveform diagram for explaining the operation of the circuit of FIG. 2. 1... Power supply voltage input terminal, 2... Transmission trigger single power terminal, 3... Controller IC, 4... Power transistor circuit, TP... Trigger pulse, PL.
...Low level period, PH...High level period, VC...
・Terminal voltage of capacitor C1, α; 1, OS2...Oscillation circuit output.
Claims (1)
ローラＩＣを用いた魚群探知機用送信回路において、前
記スイッチングレギ豆レータ用コントローラＩＣ内の発
振回路の発振出力トランジスタに流れる電流を、コンデ
ンサの充放電々圧の変化を利用して変化させることによ
り、前記発振回路の発振周期を変化せしめ、それによっ
て周波数変調を行うことを特徴とする魚群探知機用ＦＭ
、送信回路。In a fish finder transmission circuit using a pulse width modulation switching regulator controller IC, the current flowing through the oscillation output transistor of the oscillation circuit in the switching regulator controller IC is controlled by changing the charge/discharge voltage of the capacitor. FM for a fish finder, characterized in that the oscillation period of the oscillation circuit is changed by changing the oscillation period using the oscillation circuit, thereby performing frequency modulation.
, transmission circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8719484U JPS613488U (en) | 1984-06-12 | 1984-06-12 | FM transmitter circuit for fish finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8719484U JPS613488U (en) | 1984-06-12 | 1984-06-12 | FM transmitter circuit for fish finder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS613488U true JPS613488U (en) | 1986-01-10 |
| JPH0140073Y2 JPH0140073Y2 (en) | 1989-12-01 |
Family
ID=30639189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8719484U Granted JPS613488U (en) | 1984-06-12 | 1984-06-12 | FM transmitter circuit for fish finder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS613488U (en) |
-
1984
- 1984-06-12 JP JP8719484U patent/JPS613488U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0140073Y2 (en) | 1989-12-01 |
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