JPS6412486U - - Google Patents
Info
- Publication number
- JPS6412486U JPS6412486U JP1987104991U JP10499187U JPS6412486U JP S6412486 U JPS6412486 U JP S6412486U JP 1987104991 U JP1987104991 U JP 1987104991U JP 10499187 U JP10499187 U JP 10499187U JP S6412486 U JPS6412486 U JP S6412486U
- Authority
- JP
- Japan
- Prior art keywords
- load
- overcurrent
- voltage
- overcurrent detection
- transformer
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Description
第１図は本考案の一実施例を示す構成ブロツク
図、第２図は第１図の装置のタイムチヤートであ
る。第３図は従来装置の構成ブロツク図、第４図
は第３図の装置のタイムチヤートである。
１０……ＤＣ―ＤＣ変換部、２０……過電流検
出手段。Ｕ１……コンパレータ、Ｕ２……ＰＷＭ
制御部、Ｖｉｎ……入力電圧、Ｖｒ……しきい値
電圧。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a time chart of the apparatus shown in FIG. FIG. 3 is a block diagram of a conventional device, and FIG. 4 is a time chart of the device shown in FIG. 10...DC-DC converter, 20... Overcurrent detection means. U1 ...Comparator, U2 ...PWM
Control unit, Vin...input voltage, Vr...threshold voltage.
Claims (1)
ランスを介して結合した二次側に供給し、この二
次電流を平滑化して正負の直流電力として負荷に
供給するＤＣ―ＤＣ変換部と、 この負荷に送られる過電流を検出する過電流検
出手段と、 よりなる過電流検出回路において、 前記正負出力の中点であつてパルス信号領域に
設けられ当該正負電流を検出するカレントトラン
スと、 このカレントトランスの出力を抵抗を介して電
圧変換し、全波整流して得られた出力電圧と、し
きい値電圧とを比較するコンパレータと、 を備え、このコンパレータで当該しきい値電圧を
超過する過電流を検出したときは、前記ＤＣ―Ｄ
Ｃ変換部の負荷への電力供給を抑制するようにし
たことを特徴とする過電流検出回路。[Claim for Utility Model Registration] DC-DC that switches the primary DC power input, supplies it to the connected secondary side via the main transformer, smoothes this secondary current, and supplies it to the load as positive and negative DC power. In an overcurrent detection circuit comprising: a conversion section; overcurrent detection means for detecting overcurrent sent to the load; a transformer; and a comparator that converts the output of the current transformer into voltage via a resistor and compares the output voltage obtained by full-wave rectification with a threshold voltage. When an overcurrent exceeding the voltage is detected, the DC-D
An overcurrent detection circuit characterized in that power supply to a load of a C conversion section is suppressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987104991U JPS6412486U (en) | 1987-07-08 | 1987-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987104991U JPS6412486U (en) | 1987-07-08 | 1987-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6412486U true JPS6412486U (en) | 1989-01-23 |
Family
ID=31337205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987104991U Pending JPS6412486U (en) | 1987-07-08 | 1987-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6412486U (en) |
-
1987
- 1987-07-08 JP JP1987104991U patent/JPS6412486U/ja active Pending