JPS6390979U - - Google Patents
Info
- Publication number
- JPS6390979U JPS6390979U JP18651486U JP18651486U JPS6390979U JP S6390979 U JPS6390979 U JP S6390979U JP 18651486 U JP18651486 U JP 18651486U JP 18651486 U JP18651486 U JP 18651486U JP S6390979 U JPS6390979 U JP S6390979U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- smoothing capacitor
- voltage
- direct current
- voltage detection
- 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
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Power Conversion In General (AREA)
Description
第１図は本考案の実施例を示す回路図であり、
第２図は第１図に示す実施例回路における各部の
電圧の変化をあらわしたタイムチヤートである。
２…交流電源、３…整流器、４，５，６…抵抗
、７…電圧検出コンデンサ、８…不足電圧検出器
、１１…逆阻止ダイオード、１２…平滑コンデン
サ、１３…負荷。
FIG. 1 is a circuit diagram showing an embodiment of the present invention,
FIG. 2 is a time chart showing changes in voltage at various parts in the embodiment circuit shown in FIG. 2... AC power supply, 3... Rectifier, 4, 5, 6... Resistor, 7... Voltage detection capacitor, 8... Undervoltage detector, 11... Reverse blocking diode, 12... Smoothing capacitor, 13... Load.
Claims (1)
、この直流の正負極間に接続されてその放電時定
数が平滑コンデンサの放電時定数よりも短く定め
られた電圧検出コンデンサと、前記直流の正負極
間に接続されてこの直流の脈動分を除去する平滑
コンデンサと、この平滑コンデンサに並列接続さ
れた直流負荷と、前記電圧検出コンデンサと平滑
コンデンサとの間に挿入された逆阻止ダイオード
と、前記電圧検出コンデンサの電圧が所定値以下
に低下したことを検出する不足電圧検出器とで構
成されていることを特徴とする直流電源の不足電
圧検出回路。 a rectifier that is connected to an AC power source and outputs direct current; a voltage detection capacitor that is connected between the positive and negative poles of the direct current and whose discharge time constant is set to be shorter than the discharge time constant of the smoothing capacitor; and the positive and negative poles of the direct current. a smoothing capacitor connected between the voltage detection capacitor and the smoothing capacitor, a DC load connected in parallel to the smoothing capacitor, a reverse blocking diode inserted between the voltage detection capacitor and the smoothing capacitor, and the voltage An undervoltage detection circuit for a DC power supply, comprising an undervoltage detector that detects when the voltage of a detection capacitor has dropped below a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18651486U JPS6390979U (en) | 1986-12-03 | 1986-12-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18651486U JPS6390979U (en) | 1986-12-03 | 1986-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6390979U true JPS6390979U (en) | 1988-06-13 |
Family
ID=31136137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18651486U Pending JPS6390979U (en) | 1986-12-03 | 1986-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6390979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5705382B1 (en) * | 2013-11-22 | 2015-04-22 | 三菱電機株式会社 | Insulation detector and electrical equipment |
-
1986
- 1986-12-03 JP JP18651486U patent/JPS6390979U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5705382B1 (en) * | 2013-11-22 | 2015-04-22 | 三菱電機株式会社 | Insulation detector and electrical equipment |
| WO2015075821A1 (en) * | 2013-11-22 | 2015-05-28 | 三菱電機株式会社 | Insulation detector and electrical device |