JPH0250737U - - Google Patents
Info
- Publication number
- JPH0250737U JPH0250737U JP12964188U JP12964188U JPH0250737U JP H0250737 U JPH0250737 U JP H0250737U JP 12964188 U JP12964188 U JP 12964188U JP 12964188 U JP12964188 U JP 12964188U JP H0250737 U JPH0250737 U JP H0250737U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- built
- anode terminal
- card
- current limiting
- 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
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図はこの考案の一実施例によるＩＣカード
のバツクアツプ回路の回路図、第２図はこの考案
の他の実施例を示すＩＣカードのバツクアツプ回
路の回路図、第３図は従来のＩＣカードのバツク
アツプ回路の回路図である。
図中、５は揮発性半導体素子、６はダイオード
、７は電流制限抵抗、８は順方向電圧の低いダイ
オード、９は電池を示す。なお、図中、同一符号
は同一、または相当部分を示す。
Fig. 1 is a circuit diagram of an IC card backup circuit according to one embodiment of this invention, Fig. 2 is a circuit diagram of an IC card backup circuit showing another embodiment of this invention, and Fig. 3 is a circuit diagram of a conventional IC card backup circuit. FIG. 2 is a circuit diagram of a backup circuit of FIG. In the figure, 5 is a volatile semiconductor element, 6 is a diode, 7 is a current limiting resistor, 8 is a diode with a low forward voltage, and 9 is a battery. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
補正 平１．１．２３
実用新案登録請求の範囲を次のように補正する
。Amendment 1.23.1.23 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
揮発性半導体素子を内蔵電池でバツクアツプす
るＩＣカードにおいて、前記揮発性半導体素子の
電源端子は内蔵電池の陽極端子から逆流防止用整
流素子と電流制限抵抗が直列に接続されて電圧が
供給され、前記電流制限抵抗には順方向電圧の低
いダイオードがそのアノード端子を内蔵電池の陽
極端子側に向けて並列接続されていることを特徴
とするＩＣカード。[Claims for Utility Model Registration] In an IC card that backs up a volatile semiconductor element with a built-in battery, the power supply terminal of the volatile semiconductor element is connected in series with a rectifying element for preventing backflow and a current limiting resistor from the anode terminal of the built-in battery. 1. An IC card, wherein a diode having a low forward voltage is connected in parallel to the current limiting resistor with its anode terminal facing an anode terminal of a built-in battery.
Claims (1)
るＩＣカードにおいて、前記揮発性半導体素子の
電源端子は内蔵電池の陽極端子から逆流防止用整
流素子と電流制限抵抗が直列に接続されて電圧が
供給され、前記電流制限抵抗には順方向電圧の低
いダイオードがそのアノード端子を内蔵電池の陽
極端子側に向けて接続されていることを特徴とす
るＩＣカード。 In an IC card in which a volatile semiconductor element is backed up by a built-in battery, a voltage is supplied to the power terminal of the volatile semiconductor element from the anode terminal of the built-in battery through a backflow prevention rectifying element and a current limiting resistor connected in series; An IC card characterized in that a diode with a low forward voltage is connected to the current limiting resistor with its anode terminal facing the anode terminal of a built-in battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12964188U JPH0250737U (en) | 1988-10-03 | 1988-10-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12964188U JPH0250737U (en) | 1988-10-03 | 1988-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0250737U true JPH0250737U (en) | 1990-04-10 |
Family
ID=31384103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12964188U Pending JPH0250737U (en) | 1988-10-03 | 1988-10-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0250737U (en) |
-
1988
- 1988-10-03 JP JP12964188U patent/JPH0250737U/ja active Pending
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