JPS5686371A - Automatic control device for ultrasonic pulse width - Google Patents

Automatic control device for ultrasonic pulse width

Info

Publication number
JPS5686371A
JPS5686371A JP16272979A JP16272979A JPS5686371A JP S5686371 A JPS5686371 A JP S5686371A JP 16272979 A JP16272979 A JP 16272979A JP 16272979 A JP16272979 A JP 16272979A JP S5686371 A JPS5686371 A JP S5686371A
Authority
JP
Japan
Prior art keywords
pulse
trigger pulse
control device
counter
supplied
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
Application number
JP16272979A
Other languages
Japanese (ja)
Other versions
JPS597949B2 (en
Inventor
Keisuke Honda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP54162729A priority Critical patent/JPS597949B2/en
Publication of JPS5686371A publication Critical patent/JPS5686371A/en
Publication of JPS597949B2 publication Critical patent/JPS597949B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To realize an automatic decision of the ultrasonic pulse width with one trigger pulse setting switch and to increase the controllability of a control device, by setting the width of the ultrasonic pulse in accordance with the interval of the trigger pulse on a fish detector.
CONSTITUTION: When one negative trigger pulse is supplied to the terminal 9 from the oscillation trigger part, the output of the terminal 16 turns to "H". The down- clock is applied to the counter 15 from the oscillator circuit 8, and the output 16 becomes "L" when the contents of the counter 15 becomes zero. At the same time, the up-clock is supplied to the counter 15 from the oscillator circuit 10 to continue up-counting until the next trigger pulse is supplied. Accordingly, the interval of the trigger pulse is decided by the ratio of the up to down count times, thus ensuring an automatic decision for the width of the pulse delivered from the terminal 16.
COPYRIGHT: (C)1981,JPO&Japio
JP54162729A 1979-12-17 1979-12-17 Ultrasonic pulse width automatic control device Expired JPS597949B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54162729A JPS597949B2 (en) 1979-12-17 1979-12-17 Ultrasonic pulse width automatic control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54162729A JPS597949B2 (en) 1979-12-17 1979-12-17 Ultrasonic pulse width automatic control device

Publications (2)

Publication Number Publication Date
JPS5686371A true JPS5686371A (en) 1981-07-14
JPS597949B2 JPS597949B2 (en) 1984-02-21

Family

ID=15760154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54162729A Expired JPS597949B2 (en) 1979-12-17 1979-12-17 Ultrasonic pulse width automatic control device

Country Status (1)

Country Link
JP (1) JPS597949B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110581U (en) * 1984-06-25 1986-01-22 日本無線株式会社 Transmission circuit for fish finder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01158738U (en) * 1988-04-22 1989-11-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110581U (en) * 1984-06-25 1986-01-22 日本無線株式会社 Transmission circuit for fish finder

Also Published As

Publication number Publication date
JPS597949B2 (en) 1984-02-21

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