JPH0455627U

JPH0455627U -

Info

Publication number: JPH0455627U
Application number: JP9762990U
Authority: JP
Priority date: 1990-09-19
Filing date: 1990-09-19
Publication date: 1992-05-13

Description

[Brief explanation of the drawing]

第１図は本考案のメモリーバツクアツプ回路図
、第２図は本考案のメモリーバツクアツプ回路の
動作タイミングチヤート図、第３図は臨床用自動
分析装置の主要部のブロツク図、第４図は従来の
メモリーバツクアツプ回路図、第５図は従来のメ
モリーバツクアツプ回路の動作タイミングチヤー
ト図である。１……電池、２……バツクアツプメモリー、３
……コンパレータ、５……システムＤＣ電源、６
……ＣＰＵ、７……メモリープリント板、８……
メモリーバツクアツプ回路。 Figure 1 is a memory backup circuit diagram of the present invention, Figure 2 is an operation timing chart of the memory backup circuit of the present invention, Figure 3 is a block diagram of the main parts of the clinical automatic analyzer, and Figure 4 is a diagram of the main parts of the clinical automatic analyzer. Conventional Memory Backup Circuit Diagram FIG. 5 is an operational timing chart of a conventional memory backup circuit. 1...Battery, 2...Backup memory, 3
... Comparator, 5 ... System DC power supply, 6
...CPU, 7...Memory printed board, 8...
Memory backup circuit.

Claims

[Scope of utility model registration request]

In a memory backup circuit that backs up memory using a rechargeable battery, a rechargeable battery, a voltage generation circuit that generates a voltage comparable to the guaranteed voltage of the memory, and a comparator that compares the rechargeable battery and the voltage generation circuit. and a switch in a circuit section for charging the rechargeable battery, and when the system is turned on, the switch is turned off so as not to charge the rechargeable battery, and the output of the comparator can be checked. . A memory backup circuit characterized in that it is possible to check whether the voltage of the rechargeable battery is below the guaranteed voltage of the memory.