JPH01165996U - - Google Patents
Info
- Publication number
- JPH01165996U JPH01165996U JP6171188U JP6171188U JPH01165996U JP H01165996 U JPH01165996 U JP H01165996U JP 6171188 U JP6171188 U JP 6171188U JP 6171188 U JP6171188 U JP 6171188U JP H01165996 U JPH01165996 U JP H01165996U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- current limiting
- limiting resistor
- charging current
- large capacitor
- 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
- 230000014759 maintenance of location Effects 0.000 claims 2
Description
第１図はこの考案の一実施例によるデータ保持
回路、第２図は従来のデータ保持回路である。図
において、１は通常電源とバツテリーの切換用ト
ランジスタ、２はベース電流制限用抵抗、３は出
力バイアス用抵抗、４はバツテリーの充電電流制
限用抵抗、５は大容量コンデンサ保護用抵抗、６
は大容量コンデンサ、７はバツテリ切り離し用設
定ピン、８はバツテリー、９は大容量コンデンサ
切り離し用設定ピンを示す。なお、図中同一符号
は同一又は相当部分を示す。
FIG. 1 shows a data holding circuit according to an embodiment of this invention, and FIG. 2 shows a conventional data holding circuit. In the figure, 1 is a transistor for switching between the normal power supply and the battery, 2 is a base current limiting resistor, 3 is an output bias resistor, 4 is a battery charging current limiting resistor, 5 is a large capacitor protection resistor, 6
7 indicates a large capacity capacitor, 7 indicates a setting pin for disconnecting the battery, 8 indicates a battery, and 9 indicates a setting pin for disconnecting the large capacity capacitor. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
デンサとデータ保持回路切換用トランジスタによ
つて構成されたデータ保持回路において、大容量
コンデンサをバツテリーと充電電流制限用抵抗の
間に接続した事を特徴とするデータ保持回路。 In a data retention circuit configured by a battery, a charging current limiting resistor, a large capacitor, and a data retaining circuit switching transistor, the large capacitor is connected between the battery and the charging current limiting resistor. Data retention circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6171188U JPH01165996U (en) | 1988-05-11 | 1988-05-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6171188U JPH01165996U (en) | 1988-05-11 | 1988-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01165996U true JPH01165996U (en) | 1989-11-21 |
Family
ID=31287360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6171188U Pending JPH01165996U (en) | 1988-05-11 | 1988-05-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01165996U (en) |
-
1988
- 1988-05-11 JP JP6171188U patent/JPH01165996U/ja active Pending
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