JPH0421099U - - Google Patents
Info
- Publication number
- JPH0421099U JPH0421099U JP6108090U JP6108090U JPH0421099U JP H0421099 U JPH0421099 U JP H0421099U JP 6108090 U JP6108090 U JP 6108090U JP 6108090 U JP6108090 U JP 6108090U JP H0421099 U JPH0421099 U JP H0421099U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- resistor
- lamp
- voltage dividing
- power supply
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案のランプ断線検出装置の電気回
路図、第２図はランプ電流特性図、第３図は従来
装置の電気回路図、第４図は第３図の各点の電圧
値を示す図である。
Figure 1 is an electric circuit diagram of the lamp burnout detection device of the present invention, Figure 2 is a lamp current characteristic diagram, Figure 3 is an electric circuit diagram of a conventional device, and Figure 4 shows the voltage values at each point in Figure 3. FIG.
Claims (1)
通して電源に接続され、該抵抗の両端に夫々分圧
回路を設け、両分圧回路で分圧された電圧をコン
パレータで比較してランプの断線を検出する装置
において、電源側の分圧回路の分圧点とアース間
に調整抵抗を挿入し、該調整抵抗によりランプ電
流特性に一致させた基準電圧を設定することを特
徴とするランプ断線検出装置。 Multiple lamps connected in parallel are connected to the power supply through a current detection resistor, a voltage dividing circuit is provided at both ends of each resistor, and a comparator compares the voltage divided by both voltage dividing circuits to detect lamp burnout. A lamp breakage detection device, characterized in that an adjustment resistor is inserted between a voltage dividing point of a voltage divider circuit on the power supply side and ground, and a reference voltage matched to lamp current characteristics is set by the adjustment resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6108090U JPH0421099U (en) | 1990-06-08 | 1990-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6108090U JPH0421099U (en) | 1990-06-08 | 1990-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0421099U true JPH0421099U (en) | 1992-02-21 |
Family
ID=31589013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6108090U Pending JPH0421099U (en) | 1990-06-08 | 1990-06-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0421099U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213797A (en) * | 1975-07-22 | 1977-02-02 | Jidosha Denki Kogyo Co Ltd | Burn-out alarm unit for electric lamp used for automobile |
| JPS60167297A (en) * | 1984-07-12 | 1985-08-30 | 自動車電機工業株式会社 | Method of detecting disconnection of lamp |
-
1990
- 1990-06-08 JP JP6108090U patent/JPH0421099U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213797A (en) * | 1975-07-22 | 1977-02-02 | Jidosha Denki Kogyo Co Ltd | Burn-out alarm unit for electric lamp used for automobile |
| JPS60167297A (en) * | 1984-07-12 | 1985-08-30 | 自動車電機工業株式会社 | Method of detecting disconnection of lamp |