JPS6448642U - - Google Patents
Info
- Publication number
- JPS6448642U JPS6448642U JP14404287U JP14404287U JPS6448642U JP S6448642 U JPS6448642 U JP S6448642U JP 14404287 U JP14404287 U JP 14404287U JP 14404287 U JP14404287 U JP 14404287U JP S6448642 U JPS6448642 U JP S6448642U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- connection point
- zener diode
- temperature detection
- microcomputer
- 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 6
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を示す温度検出回路
図、第２図は従来の同回路図である。
１…マイコン、２，５，７…抵抗、３，６…ツ
エナーダイオード、４…温度検出素子、８…ダイ
オード、９，１０…入力端子。
FIG. 1 is a temperature detection circuit diagram showing an embodiment of the present invention, and FIG. 2 is a conventional circuit diagram. 1... Microcomputer, 2, 5, 7... Resistor, 3, 6... Zener diode, 4... Temperature detection element, 8... Diode, 9, 10... Input terminal.
Claims (1)
ド３の接続点にマイコン１の設定温度基準電圧の
入力端子９を接続し、同じく電源電圧を分圧する
温度検出素子４と抵抗５の接続点にアナログ―デ
ジタル変換（以下Ａ／Ｄ変換と呼ぶ）機能をもつ
マイコン１の入力端子１０を接続する温度検出回
路において、設定温度基準電圧決定用の抵抗２と
ツエナーダイオード３に並列にマイコン素子の基
準電圧設定用の抵抗７とツエナーダイオード６を
接続し、温度検出素子４と抵抗５の接続点と抵抗
７とツエナーダイオード６の接続点との間にダイ
オード８を逆バイアスがかかる方向に接続したこ
とを特徴とする温度検出回路。 The input terminal 9 of the set temperature reference voltage of the microcomputer 1 is connected to the connection point between the resistor 2 that divides the power supply voltage and the Zener diode 3, and the analog-digital terminal is connected to the connection point between the temperature detection element 4 and the resistor 5 that also divides the power supply voltage. In a temperature detection circuit connected to the input terminal 10 of a microcomputer 1 having a conversion (hereinafter referred to as A/D conversion) function, a resistor 2 for determining a set temperature reference voltage and a Zener diode 3 are connected in parallel to a resistor 2 for setting the reference voltage of the microcomputer element. A resistor 7 and a Zener diode 6 are connected, and a diode 8 is connected between the connection point between the temperature detection element 4 and the resistor 5 and the connection point between the resistor 7 and the Zener diode 6 in a direction in which a reverse bias is applied. temperature detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14404287U JPS6448642U (en) | 1987-09-21 | 1987-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14404287U JPS6448642U (en) | 1987-09-21 | 1987-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6448642U true JPS6448642U (en) | 1989-03-27 |
Family
ID=31411399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14404287U Pending JPS6448642U (en) | 1987-09-21 | 1987-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6448642U (en) |
-
1987
- 1987-09-21 JP JP14404287U patent/JPS6448642U/ja active Pending