JPS59147213U - Overvoltage protection circuit - Google Patents
Overvoltage protection circuitInfo
- Publication number
- JPS59147213U JPS59147213U JP3895783U JP3895783U JPS59147213U JP S59147213 U JPS59147213 U JP S59147213U JP 3895783 U JP3895783 U JP 3895783U JP 3895783 U JP3895783 U JP 3895783U JP S59147213 U JPS59147213 U JP S59147213U
- Authority
- JP
- Japan
- Prior art keywords
- constant current
- protection circuit
- overvoltage protection
- constant
- current 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
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は定電流装置に用いる定電流源の出力特性を示す
図、第２図は従来の定電流装置の回路図、第３図は第２
図の装置の出力特性を示す図、第４図は第２図の装置の
定電流源の出力特性を示す図、第５図は本考案の一実施
例を示す回路図、第６図は第５図の装置の出力特性を示
す図、第７図は第５図の装置の定電流源の出力特性を示
す図である。
１・・・・・・定電流源、２・・・・・・負荷、３，４
・・・・・・定電流装置、ＤＩ、Ｄ２．Ｄ３・・・・・
・定電圧ダイオード、ＴＲＩ、ＴＲ２・・・・・・トラ
ンジスタ、Ｒ，、Ｒ２，Ｒ３゜Ｒ４・・・・・・抵抗。Figure 1 is a diagram showing the output characteristics of a constant current source used in a constant current device, Figure 2 is a circuit diagram of a conventional constant current device, and Figure 3 is a diagram showing the output characteristics of a constant current source used in a constant current device.
FIG. 4 is a diagram showing the output characteristics of the constant current source of the device shown in FIG. 2, FIG. 5 is a circuit diagram showing an embodiment of the present invention, and FIG. 5 is a diagram showing the output characteristics of the device shown in FIG. 5, and FIG. 7 is a diagram showing the output characteristics of the constant current source of the device shown in FIG. 1... Constant current source, 2... Load, 3, 4
... Constant current device, DI, D2. D3...
- Constant voltage diode, TRI, TR2...Transistor, R,, R2, R3°R4...Resistance.
Claims (1)
ド直列回路を定電流源に並列に接続した定電流装置の過
電圧防止回路において、該定電流装置からの出力電流を
検出する検出手段と、該検出手段による前記出力電流低
下の検出に応答して前記複数個の定電圧ダイオードのう
ちの少なくとも１つを短絡する短絡手段とを備えたこと
を特徴とする定電流装置の過電圧防止回路。In an overvoltage prevention circuit for a constant current device in which a diode series circuit consisting of a plurality of series-connected constant voltage diodes is connected in parallel to a constant current source, a detection means for detecting an output current from the constant current device; an overvoltage prevention circuit for a constant current device, comprising short circuiting means for shorting at least one of the plurality of constant voltage diodes in response to detection of a decrease in the output current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3895783U JPS59147213U (en) | 1983-03-17 | 1983-03-17 | Overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3895783U JPS59147213U (en) | 1983-03-17 | 1983-03-17 | Overvoltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59147213U true JPS59147213U (en) | 1984-10-02 |
Family
ID=30169618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3895783U Pending JPS59147213U (en) | 1983-03-17 | 1983-03-17 | Overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147213U (en) |
-
1983
- 1983-03-17 JP JP3895783U patent/JPS59147213U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59147213U (en) | Overvoltage protection circuit | |
| JPS6135593U (en) | Inverter device | |
| JPS593738U (en) | Breakdown protection circuit | |
| JPS60124231U (en) | short circuit protection circuit | |
| JPS58133821U (en) | Overvoltage protection circuit | |
| JPS5989229U (en) | Cryogenic measurement equipment | |
| JPS6032728U (en) | Fault detection sensor | |
| JPS5819254U (en) | Flammable gas detection device | |
| JPS59164451U (en) | Ignition system overvoltage protection circuit | |
| JPS6087017U (en) | Constant current circuit with voltage limit | |
| JPS5934444U (en) | lightning protection circuit | |
| JPS60141636U (en) | Inverter overcurrent protection device | |
| JPS58129711U (en) | Inverted pulse generation circuit | |
| JPS58129519U (en) | Overcurrent protection circuit | |
| JPS5980762U (en) | Small current detection device | |
| JPS59176967U (en) | load detection device | |
| JPS61426U (en) | coil protection circuit | |
| JPS59138913U (en) | power circuit | |
| JPS5956930U (en) | power display device | |
| JPS5917862U (en) | Voltage drop detection circuit | |
| JPS5915195U (en) | Gas leak alarm external output circuit | |
| JPS6142614U (en) | Overload detection circuit | |
| JPS59138391U (en) | protection device | |
| JPS5822352U (en) | Disconnection detection device for vehicle lamps | |
| JPS59165029U (en) | reset circuit |