JPS55149847A - High voltage detector - Google Patents
High voltage detectorInfo
- 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
Links
Landscapes
- 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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5014382B1 (en) * | 1970-03-25 | 1975-05-27 |
-
1978
- 1978-08-01 JP JP9429478A patent/JPS55149847A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5014382B1 (en) * | 1970-03-25 | 1975-05-27 |
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