JPS6412813A - Power device for dc stabilization - Google Patents
Power device for dc stabilizationInfo
- Publication number
- JPS6412813A JPS6412813A JP16911887A JP16911887A JPS6412813A JP S6412813 A JPS6412813 A JP S6412813A JP 16911887 A JP16911887 A JP 16911887A JP 16911887 A JP16911887 A JP 16911887A JP S6412813 A JPS6412813 A JP S6412813A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- input
- alarm
- power device
- 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
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To prevent a power device from being used at voltage below standard, by outputting an alarm in case AC input voltage gets abnormal for more than a definite time. CONSTITUTION:An input power is rectified with an input circuit 1 and is made into a voltage drop pulse with an inverter circuit 2. It is again rectified with a rectification circuit 3 and outputted as DC voltage through a filter circuit 4. The inverter circuit 2 is controlled by a controlling circuit 6 through a drive circuit 5 so that the DC voltage output may be kept constant. A voltage detection circuit 7 is added to this circuit to detect whether the input voltage is normal and an alarm is outputted from an alarm circuit 8 in case the abnormality continues for a definite time. It can thereby be prevented that a power device is used below standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16911887A JPS6412813A (en) | 1987-07-07 | 1987-07-07 | Power device for dc stabilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16911887A JPS6412813A (en) | 1987-07-07 | 1987-07-07 | Power device for dc stabilization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6412813A true JPS6412813A (en) | 1989-01-17 |
Family
ID=15880628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16911887A Pending JPS6412813A (en) | 1987-07-07 | 1987-07-07 | Power device for dc stabilization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6412813A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5950469A (en) * | 1997-07-01 | 1999-09-14 | Tsubaki Nakashima Co., Ltd. | Method and equipment for surface-hardening treatment of steel balls for a ball bearing |
| CN1308750C (en) * | 2002-07-05 | 2007-04-04 | Nec液晶技术株式会社 | LCD device |
| JP2014199725A (en) * | 2013-03-29 | 2014-10-23 | パナソニック株式会社 | Overvoltage/undervoltage tripper for circuit breaker |
| JP2017127167A (en) * | 2016-01-15 | 2017-07-20 | 株式会社東芝 | Power conversion system |
| US10666130B2 (en) | 2017-09-14 | 2020-05-26 | Central Japan Railway Company | Electric power conversion system |
-
1987
- 1987-07-07 JP JP16911887A patent/JPS6412813A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5950469A (en) * | 1997-07-01 | 1999-09-14 | Tsubaki Nakashima Co., Ltd. | Method and equipment for surface-hardening treatment of steel balls for a ball bearing |
| CN1308750C (en) * | 2002-07-05 | 2007-04-04 | Nec液晶技术株式会社 | LCD device |
| JP2014199725A (en) * | 2013-03-29 | 2014-10-23 | パナソニック株式会社 | Overvoltage/undervoltage tripper for circuit breaker |
| JP2017127167A (en) * | 2016-01-15 | 2017-07-20 | 株式会社東芝 | Power conversion system |
| US10666130B2 (en) | 2017-09-14 | 2020-05-26 | Central Japan Railway Company | Electric power conversion system |
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