JPH03189569A - Voltage measuring device - Google Patents

Voltage measuring device

Info

Publication number
JPH03189569A
JPH03189569A JP33017989A JP33017989A JPH03189569A JP H03189569 A JPH03189569 A JP H03189569A JP 33017989 A JP33017989 A JP 33017989A JP 33017989 A JP33017989 A JP 33017989A JP H03189569 A JPH03189569 A JP H03189569A
Authority
JP
Japan
Prior art keywords
signal
circuit
operation
ac
voltage
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
JP33017989A
Inventor
Hiroshi Shirakawa
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP33017989A priority Critical patent/JPH03189569A/en
Publication of JPH03189569A publication Critical patent/JPH03189569A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To enable an accurate measurement for the voltage of AC signal in a short time by detecting a zerocross point of the AC source signal, starting the operation in response to the detected signal, and holding the peak voltage of rectified signal from a rectification means.
CONSTITUTION: The AC signal 101 which is the object to be measured, is inputted to a rectification circuit 1 and the rectified signal 104 outputted therefrom is inputted to a peak hold circuit 6. The operation of circuit 6 is started at the rise of a zerocross point detecting signal 109 from a zerocross point detecting circuit 7. The start of operation for this circuit 6 is made with synchronizing to the zerocross point of AC source signal 107. Then, the peak voltage of first rectified signal 104 after the start of operation is held by the circuit 6. This held peak voltage is subjected to make an A/D conversion 3 as the output signal of circuit 6 and outputted to a microcomputer 4. The digital data are recognized as the voltage measuring value of AC signal 101 by the microcomputer 4.
COPYRIGHT: (C)1991,JPO&Japio
JP33017989A 1989-12-20 1989-12-20 Voltage measuring device Pending JPH03189569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33017989A JPH03189569A (en) 1989-12-20 1989-12-20 Voltage measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33017989A JPH03189569A (en) 1989-12-20 1989-12-20 Voltage measuring device

Publications (1)

Publication Number Publication Date
JPH03189569A true JPH03189569A (en) 1991-08-19

Family

ID=18229709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33017989A Pending JPH03189569A (en) 1989-12-20 1989-12-20 Voltage measuring device

Country Status (1)

Country Link
JP (1) JPH03189569A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007292622A (en) * 2006-04-26 2007-11-08 Hitachi Industrial Equipment Systems Co Ltd Insulation monitoring device
JP2018516049A (en) * 2016-02-05 2018-06-14 クワントン オーピーピーオー モバイル テレコミュニケーションズ コーポレイション リミテッド Adapter and charge control method
JP2018517386A (en) * 2016-02-05 2018-06-28 グァンドン オッポ モバイル テレコミュニケーションズ コーポレーション リミテッド Charging system for terminal, charging method and power adapter
WO2019096661A1 (en) * 2017-11-17 2019-05-23 Eaton Intelligent Power Limited Circuit assembly and method for monitoring sinusoidal alternating voltage signals
US10491030B2 (en) 2016-07-26 2019-11-26 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system and charging method for terminal and terminal

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007292622A (en) * 2006-04-26 2007-11-08 Hitachi Industrial Equipment Systems Co Ltd Insulation monitoring device
JP2018516049A (en) * 2016-02-05 2018-06-14 クワントン オーピーピーオー モバイル テレコミュニケーションズ コーポレイション リミテッド Adapter and charge control method
JP2018516050A (en) * 2016-02-05 2018-06-14 クワントン オーピーピーオー モバイル テレコミュニケーションズ コーポレイション リミテッド Adapter and charge control method
JP2018517386A (en) * 2016-02-05 2018-06-28 グァンドン オッポ モバイル テレコミュニケーションズ コーポレーション リミテッド Charging system for terminal, charging method and power adapter
JP2018520618A (en) * 2016-02-05 2018-07-26 クワントン オーピーピーオー モバイル テレコミュニケーションズ コーポレイション リミテッド Adapter and charge control method
JP2018523963A (en) * 2016-02-05 2018-08-23 グァンドン オッポ モバイル テレコミュニケーションズ コーポレーション リミテッド Adapter and charge control method
US10291060B2 (en) 2016-02-05 2019-05-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Adapter and charging control method
US10340717B2 (en) 2016-02-05 2019-07-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system, charging method, and power adapter
US10461568B2 (en) 2016-02-05 2019-10-29 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system, charging method, and power adapter
US10491030B2 (en) 2016-07-26 2019-11-26 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system and charging method for terminal and terminal
WO2019096661A1 (en) * 2017-11-17 2019-05-23 Eaton Intelligent Power Limited Circuit assembly and method for monitoring sinusoidal alternating voltage signals

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