JPH0237044Y2 - - Google Patents
Info
- Publication number
- JPH0237044Y2 JPH0237044Y2 JP1980161743U JP16174380U JPH0237044Y2 JP H0237044 Y2 JPH0237044 Y2 JP H0237044Y2 JP 1980161743 U JP1980161743 U JP 1980161743U JP 16174380 U JP16174380 U JP 16174380U JP H0237044 Y2 JPH0237044 Y2 JP H0237044Y2
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- voltage
- circuit
- output terminal
- control device
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Control Of Voltage And Current In General (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
【考案の詳細な説明】
本考案は、ブリツジ型抵抗接続網から成るセン
シング回路の対向点から差動電圧を入力するオー
プンコレクタ出力型のコンパレータであつて、出
力端子非反転入力端子間に電圧帰還回路を接続し
てシユミツトトリガ動作をなさしめる制御装置に
おいて、出力端子が負荷を介して非安定化電源に
接続されても、所定のON／OFF動作をさせるた
めの入力差電圧、即ち差動デフアレンシヤル電圧
にほとんど変動を生じない制御装置である。従来
のこの種の装置は、第１図に示す如く、温度、圧
力、湿度、光等により等価抵抗値が変化するセン
サーＳを含むブリツジ型抵抗接続網から成るセン
シング回路１の対向点１１と１２をリレー等の負
荷２に接続したオープンコレクタ端子３０を有す
るコンパレータ３の反転入力端子３１と非反転入
力端子３２にそれぞれ接続し、出力端子３０と非
反転入力端子３２間に抵抗器４を接続して電圧帰
還を行つてシユミツトトリガ回路を構成し、
ON／OFF差動デフアレンシヤル電圧を得るもの
であつたが、この構成によると、回路電源５が、
電圧変動に対策を施していない商用電源や蓄電池
によるものであるときは、電圧帰還量も大幅に変
動して、ON／OFFのデフアレンシヤル量も電源
電圧５の変動に伴つて変化する欠点が大きかつ
た。[Detailed description of the invention] The present invention is an open collector output type comparator that inputs a differential voltage from opposing points of a sensing circuit consisting of a bridge-type resistor connection network, and has a voltage feedback between the output terminal and the non-inverting input terminal. In a control device that connects a circuit to perform a Schmitt-trigger operation, even if the output terminal is connected to an unregulated power supply via a load, the input differential voltage, that is, the differential differential differential, is used to perform the specified ON/OFF operation even if the output terminal is connected to an unregulated power supply via a load. This is a control device that causes almost no fluctuation in the serial voltage. As shown in FIG. 1, a conventional device of this kind consists of opposing points 11 and 12 of a sensing circuit 1 consisting of a bridge-type resistor connection network including a sensor S whose equivalent resistance value changes depending on temperature, pressure, humidity, light, etc. are connected to the inverting input terminal 31 and non-inverting input terminal 32 of a comparator 3 having an open collector terminal 30 connected to a load 2 such as a relay, and a resistor 4 is connected between the output terminal 30 and the non-inverting input terminal 32. perform voltage feedback to configure a Schmitt trigger circuit,
This was to obtain an ON/OFF differential differential voltage, but according to this configuration, the circuit power supply 5
If it is powered by a commercial power supply or storage battery that does not take measures against voltage fluctuations, the voltage feedback amount will fluctuate significantly, and the ON/OFF differential amount will also change as the power supply voltage 5 fluctuates. It was big.
一般的に、小電流負荷回路部分の電圧変動を安
定化させることは安価にできるが、大電流負荷回
路部分の電圧変動を安定化させるには高価になる
だけでなく、発熱や配置面積の増大等を伴い特策
ではない。 Generally, it is possible to stabilize voltage fluctuations in a small current load circuit at a low cost, but stabilizing voltage fluctuations in a large current load circuit is not only expensive, but also increases heat generation and layout area. It is not a special measure.
従つて、センシング回路に供給する電圧を、小
型のシエナーダイオード６０と直列抵抗６１によ
つて得ることは、装置全体の安定度を確保するた
めに好ましいことであるが、全回路を安定化する
ことは不利益である。 Therefore, it is preferable to obtain the voltage supplied to the sensing circuit through the small Sienar diode 60 and the series resistor 61 in order to ensure the stability of the entire device, but it is preferable to stabilize the entire circuit. That is a disadvantage.
本考案は、第２図に示す如く、リレー等の負荷
２に接続したオープンコレクタ端子３０と非反転
入力端子３２との間に、抵抗４０と直列接続した
ダイオード４１を、カソード側が出力端子３０
に、アノード側が非反転入力端子３２側に対応す
るように接続して成ることを特徴とする。 As shown in FIG. 2, the present invention includes a diode 41 connected in series with a resistor 40 between an open collector terminal 30 connected to a load 2 such as a relay and a non-inverting input terminal 32, with the cathode side connected to the output terminal 30.
A further feature is that the anode side is connected to correspond to the non-inverting input terminal 32 side.
本考案の動作を説明すると、コンパレータ３の
出力端子３０が高電圧であるときは、ダイオード
４１は逆バイアスされることにより電圧の帰還は
行なわれず、低電圧である接地レベルにおいての
みダイオード４１の順バイアスによる電圧帰還が
行なわれるから、ON／OFF差動電圧は、電源電
圧変動の影響が最も大きい高電圧帰還量に依存す
ることが無くなる。従つて、センシング回路に供
給される電圧が、電圧変動分の少ないものである
ときは、接地レベルにおける電圧帰還のみが有効
であることから、回路電源に電圧変動があつても
極めて安定なON／OFFの差動デフアレンシヤル
電圧を確保することができる。 To explain the operation of the present invention, when the output terminal 30 of the comparator 3 is at a high voltage, the diode 41 is reverse-biased so that no voltage feedback is performed, and the diode 41's order is reversed only at the ground level, which is a low voltage. Since voltage feedback is performed by bias, the ON/OFF differential voltage no longer depends on the amount of high voltage feedback, which is most affected by power supply voltage fluctuations. Therefore, when the voltage supplied to the sensing circuit has only a small amount of voltage fluctuation, only voltage feedback at the ground level is effective, so even if there are voltage fluctuations in the circuit power supply, extremely stable ON/OFF operation can be achieved. It is possible to secure an OFF differential differential voltage.
本考案によれば、出力回路を含めた高価な回路
全体の電圧安定化を要しないで、安価な小型ダイ
オード１個の追加により、従来の装置における欠
点を解消し得るものである。 According to the present invention, the disadvantages of conventional devices can be overcome by adding one inexpensive small diode without requiring voltage stabilization of the entire circuit including the output circuit, which is expensive.
第１図は、従来のコンパレータを用いた制御装
置の構成を示す回路図、第２図は本考案に係るコ
ンパレータを用いた制御装置の構成を示す回路図
である。
１……センシング回路。２……負荷。３……コ
ンパレータ。３０……出力端子。３２……非反転
入力端子。４０……抵抗器。４１……ダイオー
ド。５……非安定化電源。
FIG. 1 is a circuit diagram showing the configuration of a control device using a conventional comparator, and FIG. 2 is a circuit diagram showing the configuration of a control device using a comparator according to the present invention. 1... Sensing circuit. 2...Load. 3... Comparator. 30...Output terminal. 32...Non-inverting input terminal. 40...Resistor. 41...Diode. 5...Unregulated power supply.
Claims (1)
１の対向点から差動電圧を入力するオープンコレ
クタ出力型のコンパレータ３と、該コンパレータ
３の出力端子３０と非反転入力端子３２間に電圧
帰還回路を接続してシユミツトトリガ動作をなさ
しめる制御装置において、出力端子３０を負荷２
を介して非安定化電源５に接続すると共に、ダイ
オード４１と直列接続した抵抗器４０から成る電
圧帰還回路を、ダイオードのカソード側が出力端
子３０に、アノード側が非反転入出端子３２に対
応するように接続して成ることを特徴とするコン
パレータを用いた制御装置。 A voltage feedback circuit is connected between an open collector output type comparator 3 that inputs a differential voltage from opposite points of a sensing circuit 1 consisting of a bridge type resistor connection network, and an output terminal 30 and a non-inverting input terminal 32 of the comparator 3. In a control device that performs a shutter trigger operation, the output terminal 30 is connected to the load 2.
A voltage feedback circuit consisting of a resistor 40 connected in series with a diode 41 is connected to the unregulated power supply 5 through A control device using a comparator, which is characterized in that it is connected to the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980161743U JPH0237044Y2 (en) | 1980-11-11 | 1980-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980161743U JPH0237044Y2 (en) | 1980-11-11 | 1980-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5784021U JPS5784021U (en) | 1982-05-24 |
| JPH0237044Y2 true JPH0237044Y2 (en) | 1990-10-08 |
Family
ID=29520631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980161743U Expired JPH0237044Y2 (en) | 1980-11-11 | 1980-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237044Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128385A (en) * | 1974-09-02 | 1976-03-10 | Nippon Keibi Hosho Kk | JIDOSHOKA SOCHI |
| JPS5422552A (en) * | 1977-07-21 | 1979-02-20 | Seiko Epson Corp | Reference voltage source circuit |
| JPS5533365U (en) * | 1978-08-26 | 1980-03-04 | ||
| JPS5546552A (en) * | 1978-09-28 | 1980-04-01 | Chiyou Lsi Gijutsu Kenkyu Kumiai | Method of positioning electron beam |
-
1980
- 1980-11-11 JP JP1980161743U patent/JPH0237044Y2/ja not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128385A (en) * | 1974-09-02 | 1976-03-10 | Nippon Keibi Hosho Kk | JIDOSHOKA SOCHI |
| JPS5422552A (en) * | 1977-07-21 | 1979-02-20 | Seiko Epson Corp | Reference voltage source circuit |
| JPS5533365U (en) * | 1978-08-26 | 1980-03-04 | ||
| JPS5546552A (en) * | 1978-09-28 | 1980-04-01 | Chiyou Lsi Gijutsu Kenkyu Kumiai | Method of positioning electron beam |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5784021U (en) | 1982-05-24 |
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