JPS5866407U - Failure mode discrimination circuit - Google Patents
Failure mode discrimination circuitInfo
- Publication number
- JPS5866407U JPS5866407U JP16096981U JP16096981U JPS5866407U JP S5866407 U JPS5866407 U JP S5866407U JP 16096981 U JP16096981 U JP 16096981U JP 16096981 U JP16096981 U JP 16096981U JP S5866407 U JPS5866407 U JP S5866407U
- Authority
- JP
- Japan
- Prior art keywords
- power transistor
- load
- failure mode
- transistor
- discrimination circuit
- 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
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (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図は従来の故障モード判別回路の一例を示す回路図
、第２図は本考案による故障モード判別回路の一実施例
を示す回路図、第３図は第２図に示す回路の動作を示す
フローチャート図である。
Ｑ□〜Ｑ、・・・・・・トランジスタ、Ｚ・・・・・・
負荷、Ｒ１ｙＲ５・・・・・・抵抗、ＩＮ・・・・・・
インバータ、Ｃ・・・・・・コンデンサ、ＣＮ・…・・
コンパレータ、ＴＳ・・・・・・タイマー回路。Fig. 1 is a circuit diagram showing an example of a conventional failure mode discrimination circuit, Fig. 2 is a circuit diagram showing an embodiment of the failure mode discrimination circuit according to the present invention, and Fig. 3 shows the operation of the circuit shown in Fig. 2. It is a flowchart figure shown. Q□～Q,...transistor, Z...
Load, R1yR5...Resistance, IN...
Inverter, C... Capacitor, CN...
Comparator, TS...Timer circuit.
Claims (1)
ンジスタに対して並列接続されたプルアップ抵抗と、前
記負荷に対して並列接続〜された抵抗とトランジスタの
直列体と、前記パワートランジスタと前記負荷の接続点
から発生される判別信号の゛Ｈ゛°期間の計時をするタ
イマー回路とを有し、前記トランジスタのオン制御時に
於ける判別信号によって負荷の断線を判別し、前記タイ
マー回路が予め定められたパワートランジスタの最大オ
ン期間を越えて計時された場合に出力されるアラーム信
号によってパワートランジスタ系の短絡を判別すること
を特徴とする故障モード判別回路。A series body of a power transistor and a load, a pull-up resistor connected in parallel to the power transistor, a series body of a resistor and a transistor connected in parallel to the load, and a connection between the power transistor and the load. and a timer circuit that measures the ``H'' period of a discrimination signal generated from a point, and a disconnection of the load is determined based on the discrimination signal when the transistor is turned on, and the timer circuit is configured to perform a predetermined A failure mode determination circuit that determines a short circuit in a power transistor system based on an alarm signal that is output when the maximum on-period of the power transistor is counted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16096981U JPS5866407U (en) | 1981-10-30 | 1981-10-30 | Failure mode discrimination circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16096981U JPS5866407U (en) | 1981-10-30 | 1981-10-30 | Failure mode discrimination circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5866407U true JPS5866407U (en) | 1983-05-06 |
| JPH0143650Y2 JPH0143650Y2 (en) | 1989-12-18 |
Family
ID=29953355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16096981U Granted JPS5866407U (en) | 1981-10-30 | 1981-10-30 | Failure mode discrimination circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5866407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10332759A (en) * | 1997-05-22 | 1998-12-18 | Robert Bosch Gmbh | Electric circuit device and inspection method thereof |
| JP2014041064A (en) * | 2012-08-22 | 2014-03-06 | Ngk Spark Plug Co Ltd | Load driving device |
-
1981
- 1981-10-30 JP JP16096981U patent/JPS5866407U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10332759A (en) * | 1997-05-22 | 1998-12-18 | Robert Bosch Gmbh | Electric circuit device and inspection method thereof |
| JP4597278B2 (en) * | 1997-05-22 | 2010-12-15 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Electric circuit device and inspection method |
| JP2014041064A (en) * | 2012-08-22 | 2014-03-06 | Ngk Spark Plug Co Ltd | Load driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0143650Y2 (en) | 1989-12-18 |
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