JPH0268637U - - Google Patents
Info
- Publication number
- JPH0268637U JPH0268637U JP14520788U JP14520788U JPH0268637U JP H0268637 U JPH0268637 U JP H0268637U JP 14520788 U JP14520788 U JP 14520788U JP 14520788 U JP14520788 U JP 14520788U JP H0268637 U JPH0268637 U JP H0268637U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply circuit
- switching means
- main power
- backup power
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案に係わる電源回路装置の一実施
例を示す回路図であり、第２図は従来の電源回路
装置の回路図である。
１……入力端、２……出力端、３……バツテリ
、８……定電圧回路、１０……メイン給電回路、
１１……バツクアツプ給電回路、１２……第１ス
イツチング手段（第１パワートランジスタ）、１
５……第２スイツチング手段（第２パワートラン
ジスタ）、２０……比較手段（コンパレータ）、
３０……制御手段。
FIG. 1 is a circuit diagram showing an embodiment of a power supply circuit device according to the present invention, and FIG. 2 is a circuit diagram of a conventional power supply circuit device. 1... Input end, 2... Output end, 3... Battery, 8... Constant voltage circuit, 10... Main power supply circuit,
11... Backup power supply circuit, 12... First switching means (first power transistor), 1
5... Second switching means (second power transistor), 20... Comparing means (comparator),
30...control means.
Claims (1)
置。 (イ) バツテリが接続される入力端と、負荷が接
続される出力端との間に介在されたメイン給電回
路。このメイン給電回路は、バツテリ電圧を受け
て定電圧を出力する定電圧回路と、第１スイツチ
ング手段とを備えている。 (ロ) 上記メイン給電回路と並列をなして、上記
入力端と出力端との間に接続されたバツクアツプ
給電回路。このバツクアツプ給電回路は、第２ス
イツチング手段を備えている。 (ハ) 上記第１、第２のスイツチング手段を制御
する制御手段。この制御手段では、負荷起動時に
、上記第１スイツチング手段をＯＦＦ動作させる
とともに第２スイツチング手段をＯＮ動作させて
、メイン給電回路を開きバツクアツプ給電回路を
閉じる。また、通常給電時には、第１スイツチン
グ手段と第２スイツチング手段とを上記とは逆に
動作させて、バツクアツプ給電回路を開きメイン
給電回路を閉じる。[Claims for Utility Model Registration] A power supply circuit device characterized by having the following configuration. (a) A main power supply circuit interposed between the input end to which the battery is connected and the output end to which the load is connected. This main power supply circuit includes a constant voltage circuit that receives battery voltage and outputs a constant voltage, and a first switching means. (b) A backup power supply circuit connected in parallel with the main power supply circuit and between the input terminal and the output terminal. This backup power supply circuit includes second switching means. (c) Control means for controlling the first and second switching means. In this control means, when the load is started, the first switching means is turned off and the second switching means is turned on to open the main power supply circuit and close the backup power supply circuit. Further, during normal power supply, the first switching means and the second switching means are operated in the opposite manner to the above to open the backup power supply circuit and close the main power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14520788U JPH0268637U (en) | 1988-11-07 | 1988-11-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14520788U JPH0268637U (en) | 1988-11-07 | 1988-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0268637U true JPH0268637U (en) | 1990-05-24 |
Family
ID=31413595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14520788U Pending JPH0268637U (en) | 1988-11-07 | 1988-11-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0268637U (en) |
-
1988
- 1988-11-07 JP JP14520788U patent/JPH0268637U/ja active Pending