JPS6161483U - - Google Patents
Info
- Publication number
- JPS6161483U JPS6161483U JP14648884U JP14648884U JPS6161483U JP S6161483 U JPS6161483 U JP S6161483U JP 14648884 U JP14648884 U JP 14648884U JP 14648884 U JP14648884 U JP 14648884U JP S6161483 U JPS6161483 U JP S6161483U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- emitter
- trigger signal
- resonant circuit
- transmission trigger
- 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
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の実施例図、第２図は第１図の
各部における動作波形図、第３図は従来の残響抑
圧回路図である。
１…送信信号発生器、２…送信トランス、５…
送受波器、６，７…同調コンデンサ、３，４，８
，１２…ダイオード、９…受信入力トランス、１
０…トランジスタ、１４…充電用コンデンサ、１
８…初段増巾器、１９…増巾回路、２０…受信波
の出力端子。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram of operating waveforms in each part of FIG. 1, and FIG. 3 is a diagram of a conventional dereverberation circuit. 1... Transmission signal generator, 2... Transmission transformer, 5...
Transducer/receiver, 6, 7... Tuning capacitor, 3, 4, 8
, 12...Diode, 9...Reception input transformer, 1
0...Transistor, 14...Charging capacitor, 1
8... First stage amplifier, 19... Amplifier circuit, 20... Output terminal of received wave.
Claims (1)
反射波を受信増巾して記録、表示する水中探知装
置において、受信入力トランスの１次側に送信信
号と受信信号兼用の共振回路を設け、送信信号波
を発生させる送信トリガ信号を用いて該共振回路
の２次側に並列接続したトランジスタのベースに
接続したコンデンサを充電し、一方、送信トリガ
信号をダイオードを通して前記トランジスタのコ
レクタ・エミツタに入力し、送信トリガ信号の高
レベルの時のみ前記トランジスタ・エミツタをカ
ツトオフ状態とし、それ以外は前記コンデンサに
充電されている電荷により前記トランジスタを駆
動して、コレクタ・エミツタの抵抗を変化させ、
共振回路のＱを制御するようにした残響抑圧回路
。 In an underwater detection device that emits ultrasonic pulses into the water, amplifies the reception of the reflected waves from the object to be detected, and records and displays them, a resonant circuit is installed on the primary side of the receiving input transformer for both transmitting and receiving signals. , the transmission trigger signal that generates a transmission signal wave is used to charge a capacitor connected to the base of a transistor connected in parallel to the secondary side of the resonant circuit, while the transmission trigger signal is passed through a diode to the collector and emitter of the transistor. the transistor and emitter are cut off only when the transmission trigger signal is at a high level, and otherwise the transistor is driven by the charge stored in the capacitor to change the resistance of the collector and emitter;
A dereverberation circuit that controls the Q of a resonant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14648884U JPH0140070Y2 (en) | 1984-09-27 | 1984-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14648884U JPH0140070Y2 (en) | 1984-09-27 | 1984-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6161483U true JPS6161483U (en) | 1986-04-25 |
| JPH0140070Y2 JPH0140070Y2 (en) | 1989-12-01 |
Family
ID=30704722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14648884U Expired JPH0140070Y2 (en) | 1984-09-27 | 1984-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0140070Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012065308A (en) * | 2010-09-17 | 2012-03-29 | Tung Thih Electronic Co Ltd | Control device |
-
1984
- 1984-09-27 JP JP14648884U patent/JPH0140070Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012065308A (en) * | 2010-09-17 | 2012-03-29 | Tung Thih Electronic Co Ltd | Control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0140070Y2 (en) | 1989-12-01 |
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