JPH0454434U - - Google Patents
Info
- Publication number
- JPH0454434U JPH0454434U JP9439590U JP9439590U JPH0454434U JP H0454434 U JPH0454434 U JP H0454434U JP 9439590 U JP9439590 U JP 9439590U JP 9439590 U JP9439590 U JP 9439590U JP H0454434 U JPH0454434 U JP H0454434U
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- output
- power supply
- error amplifier
- supply panel
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は第１図の主要部分を具体的に示す回路図、第
３図は従来の電源盤の過電圧保護回路のブロツク
図、第４図は第３図の主要部分の回路図である。
１……出力電圧検出回路、２，７……誤差増幅
器、３……パルス幅変調（ＰＷＭ）制御回路、４
……スイツチング素子、５……過電圧保護回路、
８，９，１０……抵抗器、１２……可変抵抗器、
１３，１４……基準電源。
Figure 1 is a block diagram of one embodiment of the present invention;
1 is a circuit diagram specifically showing the main parts of FIG. 1, FIG. 3 is a block diagram of a conventional overvoltage protection circuit for a power supply panel, and FIG. 4 is a circuit diagram of the main parts of FIG. 3. 1... Output voltage detection circuit, 2, 7... Error amplifier, 3... Pulse width modulation (PWM) control circuit, 4
...Switching element, 5...Overvoltage protection circuit,
8, 9, 10...Resistor, 12...Variable resistor,
13, 14...Reference power supply.
Claims (1)
出力電圧検出回路の検出した検出電圧と予め定め
る基準電圧との差を受け増幅して出力する誤差増
幅器と、前記誤差増幅器の出力を受け制御信号を
出力するパルス幅変調制御回路とで構成する制御
回路でスイツチング素子を制御し前記出力電圧を
一定電圧に保持する機能を持つ電源盤に付加して
前記出力電圧を監視し前記電源盤を過電圧から保
護する電源盤の過電圧保護回路において、前記出
力電圧検出回路の出力を前記過電圧保護回路の入
力として接続することを特徴とする電源盤の過電
圧保護回路。 an output voltage detection circuit that detects an output voltage; an error amplifier that receives and amplifies the difference between the detected voltage detected by the output voltage detection circuit and a predetermined reference voltage; and an error amplifier that receives the output of the error amplifier and outputs a control signal. A control circuit consisting of an output pulse width modulation control circuit controls a switching element and has a function of maintaining the output voltage at a constant voltage.It is added to a power supply panel to monitor the output voltage and protect the power supply panel from overvoltage. An overvoltage protection circuit for a power supply panel, characterized in that an output of the output voltage detection circuit is connected as an input to the overvoltage protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9439590U JPH0454434U (en) | 1990-09-07 | 1990-09-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9439590U JPH0454434U (en) | 1990-09-07 | 1990-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454434U true JPH0454434U (en) | 1992-05-11 |
Family
ID=31832300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9439590U Pending JPH0454434U (en) | 1990-09-07 | 1990-09-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454434U (en) |
-
1990
- 1990-09-07 JP JP9439590U patent/JPH0454434U/ja active Pending