JPH031632U - - Google Patents
Info
- Publication number
- JPH031632U JPH031632U JP5846789U JP5846789U JPH031632U JP H031632 U JPH031632 U JP H031632U JP 5846789 U JP5846789 U JP 5846789U JP 5846789 U JP5846789 U JP 5846789U JP H031632 U JPH031632 U JP H031632U
- Authority
- JP
- Japan
- Prior art keywords
- load
- switching element
- semiconductor switching
- drive circuit
- supplies
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Electronic Switches (AREA)
Description
第１図及び第２図は本考案の一実施例を示し、
第１図は電気的構成の概略図、第２図は状態検出
用のプログラムを示すフローチヤートであり、第
３図は従来例を示す第１図相当図である。
図面中、１１はアクチユエータ（負荷）、１２
は負荷駆動回路、１２ａは出力端子、１３はパワ
ートランジスタ（半導体スチツチング素子）、１
７はオンオフ制御用トランジタ、２１はマイクロ
コンピユータ（制御手段）、２２は検出用抵抗、
２３は入力保護回路である。
1 and 2 show an embodiment of the present invention,
FIG. 1 is a schematic diagram of the electrical configuration, FIG. 2 is a flowchart showing a state detection program, and FIG. 3 is a diagram corresponding to FIG. 1 showing a conventional example. In the drawing, 11 is an actuator (load), 12
1 is a load driving circuit, 12a is an output terminal, 13 is a power transistor (semiconductor switching element), 1
7 is an on/off control transistor, 21 is a microcomputer (control means), 22 is a detection resistor,
23 is an input protection circuit.
Claims (1)
フさせることにより負荷の通断電を行う負荷駆動
回路において、前記半導体スイツチング素子のオ
フ時に前記負荷に微小電流を供給する検出用抵抗
と、この検出用抵抗に現われる端子電圧が予め設
定された基準電圧以下の状態では前記半導体スイ
ツチング素子に対するオン指令を拘束する制御手
段とを設けたことを特徴とする負荷駆動回路。 In a load drive circuit that turns on and off a load driving semiconductor switching element, the load drive circuit includes a detection resistor that supplies a minute current to the load when the semiconductor switching element is turned off, and a detection resistor that supplies a small current to the load when the semiconductor switching element is turned off. 1. A load drive circuit comprising: control means for restricting an ON command to the semiconductor switching element when the terminal voltage is lower than a preset reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5846789U JPH031632U (en) | 1989-05-19 | 1989-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5846789U JPH031632U (en) | 1989-05-19 | 1989-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031632U true JPH031632U (en) | 1991-01-09 |
Family
ID=31584103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5846789U Pending JPH031632U (en) | 1989-05-19 | 1989-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0514674U (en) * | 1991-07-19 | 1993-02-26 | トキコ株式会社 | Disc brake |
-
1989
- 1989-05-19 JP JP5846789U patent/JPH031632U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0514674U (en) * | 1991-07-19 | 1993-02-26 | トキコ株式会社 | Disc brake |
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