JPS58182528U - switching circuit - Google Patents
switching circuitInfo
- Publication number
- JPS58182528U JPS58182528U JP7758682U JP7758682U JPS58182528U JP S58182528 U JPS58182528 U JP S58182528U JP 7758682 U JP7758682 U JP 7758682U JP 7758682 U JP7758682 U JP 7758682U JP S58182528 U JPS58182528 U JP S58182528U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- resistor
- switching circuit
- diode
- npn transistor
- 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
Landscapes
- Electronic Switches (AREA)
- Logic Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の切換回路の回路図、第２図は本考案によ
る切換回路の一実施例を示す回路図、第３図は他の実施
例を示す回路図である。
ＱＩＯ，Ｑｕ””ＮＰＮ）ランジスタ、Ｒ，、Ｒ８，Ｒ
９゜Ｒｌｏ、 Ｒ□１・・・・・・抵抗、Ａ・・・・・
・出力端子。FIG. 1 is a circuit diagram of a conventional switching circuit, FIG. 2 is a circuit diagram showing one embodiment of the switching circuit according to the present invention, and FIG. 3 is a circuit diagram showing another embodiment. QIO, Qu””NPN) transistor, R,, R8, R
9゜Rlo, R□1...Resistance, A...
・Output terminal.
Claims (1)
において、ＩＣの３ステート出力端子に第１のＮＰＮト
ランジスタのエミッタと抵抗とを接続し、該抵抗の他端
と該第１のＮＰＮ ）ランジスタのベースとの間に抵抗
側をカソードとしたダイオードを接続し、該ダイオード
と基準電源及びグランドとの間に夫々抵抗を介装し、該
ダイオードのグランド側にはエミッタを接地した第２の
ＮＰＮ ）ランジスタのベースを接続し、更に第１のト
ランジスタと第２のトランジスタのコレクタ聞及び第１
のトランジスタのコレクタと基準Ｗ間に夫々抵抗を介装
し、この抵抗と抵抗の間に出力端子を設けたことを特徴
とする切換回路。In a switching circuit that switches the 3-state output voltage of a CMO3IC, the emitter of a first NPN transistor and a resistor are connected to the 3-state output terminal of the IC, and the other end of the resistor is connected to the base of the first NPN transistor. A diode with the resistor side as the cathode is connected in between, a resistor is interposed between the diode and the reference power supply and the ground, respectively, and the ground side of the diode is a second NPN transistor whose emitter is grounded. and further between the collectors of the first transistor and the second transistor, and between the collectors of the first transistor and the first transistor.
A switching circuit characterized in that a resistor is interposed between the collector of each of the transistors and a reference W, and an output terminal is provided between the resistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7758682U JPS58182528U (en) | 1982-05-28 | 1982-05-28 | switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7758682U JPS58182528U (en) | 1982-05-28 | 1982-05-28 | switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58182528U true JPS58182528U (en) | 1983-12-05 |
Family
ID=30086836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7758682U Pending JPS58182528U (en) | 1982-05-28 | 1982-05-28 | switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58182528U (en) |
-
1982
- 1982-05-28 JP JP7758682U patent/JPS58182528U/en active Pending
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