JPS6390981U - - Google Patents
Info
- Publication number
- JPS6390981U JPS6390981U JP18297586U JP18297586U JPS6390981U JP S6390981 U JPS6390981 U JP S6390981U JP 18297586 U JP18297586 U JP 18297586U JP 18297586 U JP18297586 U JP 18297586U JP S6390981 U JPS6390981 U JP S6390981U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- time constant
- reference voltage
- relay
- 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 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Ac-Ac Conversion (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Description
第１図はこの考案の一実施例によるスイツチン
グ電源用投入回路を示すブロツク図、第２図は従
来のスイツチング電源用投入回路を示すブロツク
図である。
１：電圧変換を行なうコンバーター（ＣＯＮＶ
）、２：入力コンデンサ（Ｃ０）、３：突入電流
防止用抵抗（Ｒ０）、４：時定数用抵抗（Ｒ１）
、５：時定数用コンデンサ（Ｃ１）、６：リレー
（ＲＬ０）、６ａ：ＲＬ０を駆動する回路（Ｄｒ
ｉｖｅｒ）、７：ＲＬ０の接点（ｒｌ０）、８：
比較回路（ＣＯＭＰ０）、９：放電回路（ＤＣＨ
Ｒ）、１０：ラツチ回路（Ｌａｔｃｈ′）、１１
：比較回路（ＣＯＭＰ１）、１２：ラツチ回路（
Ｌａｔｃｈ）、ＶＩＮ：入力電源、Ｄ０：整流ダ
イオード、ＶＲＥＦ０，１：基準電圧。
FIG. 1 is a block diagram showing a switching power supply circuit according to an embodiment of this invention, and FIG. 2 is a block diagram showing a conventional switching power supply circuit. 1: Converter that performs voltage conversion (CONV
), 2: Input capacitor (C 0 ), 3: Inrush current prevention resistor (R 0 ), 4: Time constant resistor (R 1 )
, 5: Time constant capacitor (C 1 ), 6: Relay (RL 0 ), 6a: Circuit for driving RL 0 (Dr
iver), 7: RL 0 contact (rl 0 ), 8:
Comparison circuit (COMP 0 ), 9: Discharge circuit (DCH
R), 10: Latch circuit (Latch'), 11
: Comparison circuit (COMP 1 ), 12: Latch circuit (
Latch), VIN: input power supply, D 0 : rectifier diode, VREF 0 , 1 : reference voltage.
Claims (1)
を供給する入力コンデンサへ、直列に抵抗を接続
し、リレーのブレイク接点を使用して前記入力コ
ンデンサから時定数回路に電流を供給し、時定数
回路のコンデンサ端子電圧を基準電圧と比較して
、基準電圧を越えた時に、前記リレーが動作して
そのメイク接点で前記直列抵抗を短絡すると共に
、時定数回路を放電して初期状態に戻し、かつ前
記リレーの動作は保持されるスイツチング電源用
投入回路において、前記直列抵抗の端子間電圧を
第２の基準電圧と比較して、同端子間電圧がこの
第２の基準電圧より高い時は、前記時定数回路の
放電を停止する比較回路を具備することを特徴と
するスイツチング電源用投入回路。 A resistor is connected in series to the input capacitor that supplies ripple current to the converter that performs voltage conversion, and the break contact of the relay is used to supply current from the input capacitor to the time constant circuit, and the capacitor terminal voltage of the time constant circuit is is compared with a reference voltage, and when the reference voltage is exceeded, the relay operates to short-circuit the series resistor at its make contact, discharge the time constant circuit to return to the initial state, and operate the relay. In the switching power-on circuit in which the voltage is maintained, the voltage between the terminals of the series resistor is compared with a second reference voltage, and when the voltage between the terminals is higher than the second reference voltage, the voltage of the time constant circuit is A switching power-on circuit characterized by comprising a comparison circuit for stopping discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18297586U JPS6390981U (en) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18297586U JPS6390981U (en) | 1986-11-28 | 1986-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6390981U true JPS6390981U (en) | 1988-06-13 |
Family
ID=31129276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18297586U Pending JPS6390981U (en) | 1986-11-28 | 1986-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6390981U (en) |
-
1986
- 1986-11-28 JP JP18297586U patent/JPS6390981U/ja active Pending
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