JPH0176181U - - Google Patents
Info
- Publication number
- JPH0176181U JPH0176181U JP1987171570U JP17157087U JPH0176181U JP H0176181 U JPH0176181 U JP H0176181U JP 1987171570 U JP1987171570 U JP 1987171570U JP 17157087 U JP17157087 U JP 17157087U JP H0176181 U JPH0176181 U JP H0176181U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- switching power
- smoothing capacitor
- switch
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000009499 grossing Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Rectifiers (AREA)
- 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図は出力保持時間ｔＨの測定説明図であ
る。第３図は停電時の説明図、第４図は従来のス
イツチング電源の検査装置の構成図である。
１０…スイツチング電源、１２…平滑用コンデ
ンサ、２０…コンデンサ検査手段、３０…最低レ
ギユレーシヨン電圧検査手段。Ｅ１…直流電源、
ＳＷ１…スイツチ、Ｒ１…抵抗。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram for measuring the output holding time tH. FIG. 3 is an explanatory diagram at the time of a power outage, and FIG. 4 is a configuration diagram of a conventional switching power supply inspection device. DESCRIPTION OF SYMBOLS 10... Switching power supply, 12... Smoothing capacitor, 20... Capacitor inspection means, 30... Minimum regulation voltage inspection means. E1 ...DC power supply,
SW1 ...Switch, R1 ...Resistance.
Claims (1)
された直流電圧をトランスの一次側に接続すると
共に、この一次側の直流信号をスイツチングして
二次側にスイツチング電圧を伝達して直流平滑化
して負荷に安定化した直流電圧を供給するスイツ
チング電源であつて、 このスイツチング電源の一次側に設けられた平
滑用コンデンサの両端に検査端子を設け、 スイツチと直流電源と抵抗とでループをなし、
この抵抗の両側を当該検査端子と接続すると共に
交流信号の入力を抑止して、 当該スイツチをオンして当該平滑用コンデンサ
を充電し、次に当該スイツチをオフして当該平滑
用コンデンサの電圧低下から放電時定数を求め、
この放電時定数から当該平滑用コンデンサの容量
を演算するコンデンサ検査手段と、 前記直流電圧として最低規格電圧を供給し、前
記負荷に供給される電圧が安定化電源として作用
する許容範囲にあるか否か検査する最低レギユレ
ーシヨン電圧検査手段と、 を具備することを特徴とするスイツチング電源の
検査装置。[Claim for Utility Model Registration] An AC signal is input, rectified and smoothed, and this smoothed DC voltage is connected to the primary side of the transformer, and this DC signal on the primary side is switched to the secondary side. A switching power supply that transmits voltage, smoothes the DC voltage, and supplies a stabilized DC voltage to the load. Test terminals are provided at both ends of a smoothing capacitor installed on the primary side of this switching power supply, and the switch and DC power supply and resistor to form a loop,
Connect both sides of this resistor to the test terminal, suppress the input of the AC signal, turn on the switch to charge the smoothing capacitor, then turn off the switch to reduce the voltage of the smoothing capacitor. Find the discharge time constant from
A capacitor inspection means that calculates the capacity of the smoothing capacitor from this discharge time constant, and supplies a minimum standard voltage as the DC voltage to determine whether the voltage supplied to the load is within an allowable range for functioning as a stabilized power supply. 1. A testing device for a switching power supply, comprising: a minimum regulation voltage testing means for testing whether the switching power supply has a minimum regulation voltage;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171570U JPH0717272Y2 (en) | 1987-11-10 | 1987-11-10 | Switching power supply inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171570U JPH0717272Y2 (en) | 1987-11-10 | 1987-11-10 | Switching power supply inspection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0176181U true JPH0176181U (en) | 1989-05-23 |
| JPH0717272Y2 JPH0717272Y2 (en) | 1995-04-19 |
Family
ID=31463517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171570U Expired - Lifetime JPH0717272Y2 (en) | 1987-11-10 | 1987-11-10 | Switching power supply inspection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717272Y2 (en) |
-
1987
- 1987-11-10 JP JP1987171570U patent/JPH0717272Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0717272Y2 (en) | 1995-04-19 |
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