JPH0353036U - - Google Patents
Info
- Publication number
- JPH0353036U JPH0353036U JP11405489U JP11405489U JPH0353036U JP H0353036 U JPH0353036 U JP H0353036U JP 11405489 U JP11405489 U JP 11405489U JP 11405489 U JP11405489 U JP 11405489U JP H0353036 U JPH0353036 U JP H0353036U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- power supply
- side transistor
- current
- output terminal
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
本考案の他の実施例の回路図、第３図は本考案の
更に他の実施例の要部の回路図、第４図は従来の
一例の回路図である。
Ｑ０，Ｑ１〜Ｑ３，Ｘ１，Ｘ２……トランジス
タ、Ｖｃｃ……電源、Ｖｏｕｔ……出力端子、Ｒ
ＬＯ……負荷、Ｒ２……抵抗、Ｄ……ツエナーダ
イオード、Ａ……アンプ。
FIG. 1 is a circuit diagram of one embodiment of the present invention, FIG. 2 is a circuit diagram of another embodiment of the present invention, FIG. 3 is a circuit diagram of a main part of still another embodiment of the present invention, and FIG. The figure is a circuit diagram of a conventional example. Q0 , Q1 to Q3 , X1 , X2 ...transistor, Vcc...power supply, Vout ...output terminal, R
LO...load, R2 ...resistance, D...zener diode, A...amplifier.
Claims (1)
子とアース端子との間に接続されたカレントミラ
ー回路に電流を流して該カレントミラー回路の電
流出力端に接続された出力側トランジスタをオン
させ、該出力側トランジスタのオンによつてその
出力端子をＬレベル又はＨレベルに切換えること
により、該出力端子と上記電源端子との間に接続
された負荷を誤動作させないように切換える負荷
電源切換回路において、 上記出力端子と上記カレントミラー回路の電流
入力端に接続された入力側トランジスタの入力端
子との間に帰還トランジスタを接続し、上記出力
端子電圧のレベル変動を該帰還トランジスタを介
して該入力側トランジスタの入力端子に帰還させ
る構成としてなる負荷電源切換回路。[Claims for Utility Model Registration] By detecting a drop in the power supply voltage, a current is caused to flow through a current mirror circuit connected between a power supply terminal and a ground terminal, and the current mirror circuit is connected to the current output terminal of the current mirror circuit. By turning on the output side transistor and switching the output terminal to L level or H level by turning on the output side transistor, the load connected between the output terminal and the power supply terminal is prevented from malfunctioning. In the load power supply switching circuit to be switched, a feedback transistor is connected between the output terminal and the input terminal of the input side transistor connected to the current input terminal of the current mirror circuit, and the level fluctuation of the output terminal voltage is controlled by the feedback transistor. A load power supply switching circuit configured to feed back to the input terminal of the input side transistor via the input side transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11405489U JPH0737376Y2 (en) | 1989-09-28 | 1989-09-28 | Load power supply switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11405489U JPH0737376Y2 (en) | 1989-09-28 | 1989-09-28 | Load power supply switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0353036U true JPH0353036U (en) | 1991-05-22 |
| JPH0737376Y2 JPH0737376Y2 (en) | 1995-08-23 |
Family
ID=31662443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11405489U Expired - Fee Related JPH0737376Y2 (en) | 1989-09-28 | 1989-09-28 | Load power supply switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737376Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8687349B2 (en) | 2010-07-21 | 2014-04-01 | Teradyne, Inc. | Bulk transfer of storage devices using manual loading |
| US9001456B2 (en) | 2010-08-31 | 2015-04-07 | Teradyne, Inc. | Engaging test slots |
| US9459312B2 (en) | 2013-04-10 | 2016-10-04 | Teradyne, Inc. | Electronic assembly test system |
-
1989
- 1989-09-28 JP JP11405489U patent/JPH0737376Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0737376Y2 (en) | 1995-08-23 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |