JPS614183A - Temperature control system of heating resistor - Google Patents
Temperature control system of heating resistorInfo
- Publication number
- JPS614183A JPS614183A JP12367684A JP12367684A JPS614183A JP S614183 A JPS614183 A JP S614183A JP 12367684 A JP12367684 A JP 12367684A JP 12367684 A JP12367684 A JP 12367684A JP S614183 A JPS614183 A JP S614183A
- Authority
- JP
- Japan
- Prior art keywords
- heating resistor
- temperature
- bridge
- control system
- temperature control
- 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
Landscapes
- Control Of Resistance Heating (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
【発明の詳細な説明】
゛ 本発明は、電力を熱に変換する発熱用抵抗体
について、別に温度検出器を用意することなく、温度制
御をする方法に関する。一般には発熱用抵抗体は、その
素材によって程度は変わるが、温度が上昇すると抵抗値
も上昇する。本発明はこの特性を利用して、抵抗ブリッ
ジの特別な利用方法と、近年進歩の著しい電子技術を駆
使して、安価で必要な温度を設定でき、なおかつ、発熱
抵抗体から熱を奪うとフィードバックが働き抵抗体にか
かる電圧を上昇させ一定温度を保つように動作する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the temperature of a heat generating resistor that converts electric power into heat without separately preparing a temperature detector. In general, the resistance value of a heating resistor increases as the temperature increases, although the degree of resistance varies depending on the material. The present invention takes advantage of this characteristic, makes full use of a special method of using resistor bridges, and makes full use of electronic technology, which has made significant progress in recent years, to set the required temperature at low cost, and also provides feedback that heat is removed from the heating resistor. works to increase the voltage applied to the resistor and maintain a constant temperature.
第１図においてブリッジはＲ１，Ｒ２，Ｒ３゜Ｒ４で構
成されている。図では、Ｒ１が発熱抵抗体である。Ｂ−
Ｄ間には発熱の為の電圧がかかるので、Ｒ２は低い抵抗
値が、又Ｒ３，Ｒ４には高い抵抗値が選ばれる。ここで
、Ｂ−Ｄ間に電圧がかかるとＲ１が目的とする発熱をす
るが、この電圧はＡ点と６点の差電圧を増幅器 ＰＡ
で増幅したものであり、はぼ Ｒ１／Ｒ２＝Ｒ３／Ｒ
４となって、ブリッジは定常状態となる。In FIG. 1, the bridge is composed of R1, R2, R3°R4. In the figure, R1 is a heating resistor. B-
Since a voltage is applied between D for heat generation, a low resistance value is selected for R2, and high resistance values are selected for R3 and R4. Here, when a voltage is applied between B and D, R1 generates the desired heat, but this voltage is generated by converting the difference voltage between point A and point 6 into the amplifier PA
It is amplified by R1/R2=R3/R
4, the bridge is in a steady state.
第２図は、演算増幅機 ＯＰ、トランジスタＴＲＩ、Ｔ
Ｒ２，，ツェナーダイオード ＺＤ、電源 ＢＹ、抵抗
類 等を組み合わせ、Ｒ１をハンダごてのヒーターとし
て実際に試作した回路図である。第３図は、簡便なスイ
ッチング制御の例として、第２図にコンデンサ Ｃを追
加してフィードバック系に遅れを持たせた回路図であり
、ＴＲ１の消費電力は著しく少なくなる。Figure 2 shows operational amplifier OP, transistors TRI, T
This is an actual prototype circuit diagram combining R2, Zener diode ZD, power supply BY, resistors, etc., and using R1 as a heater for a soldering iron. As an example of simple switching control, FIG. 3 is a circuit diagram in which a capacitor C is added to FIG. 2 to provide a delay in the feedback system, and the power consumption of TR1 is significantly reduced.
以上のように本発明の実施によれば、発熱体自身が温度
制御されている特徴の為に、温度検出機は熱論不要だし
、温度検出遅れがない事で発熱体の温度制御性が良く、
安価に、性能の良い温度制御が実施できる。As described above, according to the present invention, since the temperature of the heating element itself is controlled, there is no need for a temperature detector, and there is no delay in temperature detection, so the temperature of the heating element is well controlled.
Temperature control with good performance can be performed at low cost.
第１図は、本発明の基本構成を示す図であり、第２図は
、本発明のアナログ制御の実施例であり、第３図は、電
力をスイッチング制御とし効率を良くした実施例である
。Fig. 1 is a diagram showing the basic configuration of the present invention, Fig. 2 is an example of analog control of the invention, and Fig. 3 is an example in which power is controlled by switching to improve efficiency. .
Claims (1)
十分に消費電力の小さい値で、なおかつブリッジが前記
発熱用抵抗体の設定温度時の抵抗値で平衡するように選
んだ時、ブリッジの平衡検出端を検出増幅した電圧を、
該ブリッジの電圧印加端に加える事によって、発熱用抵
抗体に電力を与え、その抵抗値を一定に保つようにして
該発熱用抵抗体の温度を一定に制御する方式。When a heating resistor is used as one of the resistance bridges, and the other three are selected to have sufficiently low power consumption, and the bridge is balanced with the resistance value at the set temperature of the heating resistor. , detect and amplify the voltage at the balanced detection end of the bridge,
This method applies power to the heat generating resistor by applying it to the voltage application end of the bridge, and controls the temperature of the heat generating resistor at a constant level by keeping its resistance value constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12367684A JPS614183A (en) | 1984-06-18 | 1984-06-18 | Temperature control system of heating resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12367684A JPS614183A (en) | 1984-06-18 | 1984-06-18 | Temperature control system of heating resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS614183A true JPS614183A (en) | 1986-01-10 |
Family
ID=14866540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12367684A Pending JPS614183A (en) | 1984-06-18 | 1984-06-18 | Temperature control system of heating resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614183A (en) |
-
1984
- 1984-06-18 JP JP12367684A patent/JPS614183A/en active Pending
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