JPS62155362U - - Google Patents
Info
- Publication number
- JPS62155362U JPS62155362U JP4367786U JP4367786U JPS62155362U JP S62155362 U JPS62155362 U JP S62155362U JP 4367786 U JP4367786 U JP 4367786U JP 4367786 U JP4367786 U JP 4367786U JP S62155362 U JPS62155362 U JP S62155362U
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- sensor
- monitor circuit
- minute current
- rich
- 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
- 230000004913 activation Effects 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来のリツチモニタ回路の一例を示す回路図
である。
図中、ＳＥＮはＯ２センサ、ＣＭＰはコンパレ
ータ、Ｄ２はツエナーダイオード、Ｒ１〜Ｒ５は
抵抗、Ｃはコンデンサである。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing an example of a conventional rich monitor circuit. In the figure, SEN is an O2 sensor, CMP is a comparator, D2 is a Zener diode, R1 to R5 are resistors, and C is a capacitor.
Claims (1)
と該抵抗値が低下すると共に酸素濃度に応じた起
電力を発生するセンサに微少電流を流し、該セン
サの両端に発生する電圧から該センサの活性、不
活性を判定するリツチモニタ回路において、該微
少電流の供給源として、低漏れ電流のツエナーダ
イオードとその保護用抵抗からなる直列回路を低
インピーダンス電源に接続してなることを特徴と
する酸素濃度センサのリツチモニタ回路。 When inactive, the internal resistance value is high, and when activated, this resistance value decreases and a minute current is passed through the sensor, which generates an electromotive force according to the oxygen concentration. In a rich monitor circuit for determining activation or inactivity, the supply source of the minute current is a series circuit consisting of a low leakage current Zener diode and its protective resistor connected to a low impedance power supply. Sensor rich monitor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4367786U JPH052849Y2 (en) | 1986-03-25 | 1986-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4367786U JPH052849Y2 (en) | 1986-03-25 | 1986-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62155362U true JPS62155362U (en) | 1987-10-02 |
| JPH052849Y2 JPH052849Y2 (en) | 1993-01-25 |
Family
ID=30860761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4367786U Expired - Lifetime JPH052849Y2 (en) | 1986-03-25 | 1986-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH052849Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007147463A (en) * | 2005-11-28 | 2007-06-14 | Ngk Spark Plug Co Ltd | Air/fuel ratio detector |
-
1986
- 1986-03-25 JP JP4367786U patent/JPH052849Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007147463A (en) * | 2005-11-28 | 2007-06-14 | Ngk Spark Plug Co Ltd | Air/fuel ratio detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH052849Y2 (en) | 1993-01-25 |