JPS55149847A - High voltage detector - Google Patents

High voltage detector

Info

Publication number
JPS55149847A
JPS55149847A JP9429478A JP9429478A JPS55149847A JP S55149847 A JPS55149847 A JP S55149847A JP 9429478 A JP9429478 A JP 9429478A JP 9429478 A JP9429478 A JP 9429478A JP S55149847 A JPS55149847 A JP S55149847A
Authority
JP
Japan
Prior art keywords
voltage
voltage amplifier
amplifier circuit
accident
danger
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
Application number
JP9429478A
Other languages
Japanese (ja)
Inventor
Shigeo Sato
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.)
Sanyo Electronic Industries Co Ltd
Original Assignee
Sanyo Electronic Industries Co Ltd
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 Sanyo Electronic Industries Co Ltd filed Critical Sanyo Electronic Industries Co Ltd
Priority to JP9429478A priority Critical patent/JPS55149847A/en
Publication of JPS55149847A publication Critical patent/JPS55149847A/en
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To accurately warn the danger in a high-tension electrical energy transmitting and distributing engineering work, and prevent an accident from occurring, by automatically giving an alarm when a worker comes close to an area which is a predetermined distance away from a high-voltage place.
CONSTITUTION: An alternating current induced from a high-tension place to an antenna is applied to a low-pass filter, and a frequency of 50Hz or 60Hz alone to a voltage amplifier circuit. A variable resistor is provided in the voltage amplifier circut to set an operation distance. An output from the voltage amplifier circuit is rectified and compared with a reference voltage from a comparator. When an output from the voltage amplifier circuit is higher than the reference voltage, a buzzer actuator element is energized to allow a buzzer to go off. The operations of these circuits can be checked with an additionally provided oscillator of 60Hz. The above arrangement permits calling a worker's attention to danger so that an accident can be prevented from occurring.
COPYRIGHT: (C)1980,JPO&Japio
JP9429478A 1978-08-01 1978-08-01 High voltage detector Pending JPS55149847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9429478A JPS55149847A (en) 1978-08-01 1978-08-01 High voltage detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9429478A JPS55149847A (en) 1978-08-01 1978-08-01 High voltage detector

Publications (1)

Publication Number Publication Date
JPS55149847A true JPS55149847A (en) 1980-11-21

Family

ID=14106238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9429478A Pending JPS55149847A (en) 1978-08-01 1978-08-01 High voltage detector

Country Status (1)

Country Link
JP (1) JPS55149847A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014382B1 (en) * 1970-03-25 1975-05-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014382B1 (en) * 1970-03-25 1975-05-27

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