JPS623735Y2 - - Google Patents

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Publication number
JPS623735Y2
JPS623735Y2 JP1976104253U JP10425376U JPS623735Y2 JP S623735 Y2 JPS623735 Y2 JP S623735Y2 JP 1976104253 U JP1976104253 U JP 1976104253U JP 10425376 U JP10425376 U JP 10425376U JP S623735 Y2 JPS623735 Y2 JP S623735Y2
Authority
JP
Japan
Prior art keywords
transistor
voltage
regulator
output
relay
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
Application number
JP1976104253U
Other languages
Japanese (ja)
Other versions
JPS5321571U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1976104253U priority Critical patent/JPS623735Y2/ja
Publication of JPS5321571U publication Critical patent/JPS5321571U/ja
Application granted granted Critical
Publication of JPS623735Y2 publication Critical patent/JPS623735Y2/ja
Expired legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)
  • Safety Devices In Control Systems (AREA)

Description

【考案の詳細な説明】 本考案は調節器の飽和を検出する装置の改良に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved device for detecting regulator saturation.

自動制御を行なつている装置に於て、帰還が切
れたり調節器が故障をしたりすると制御対象に対
して大きな損害を与える。例えば、直流モーター
の回転数を制御している装置に於いて帰還が切れ
た場合には、調節器の出力は甚大となりモーター
の回転数は異常に増加し、ついにはモータを焼損
する。この様な事故を防止する為、回転数が異常
に高くなつた事を検出してモーターの電源を切る
方法もあるが、より早く異常を検出する方法とし
て調節器の出力電圧が通常の状態より高くなつた
事、つまり調節器の出力が飽和した事を検出する
方法が良く知られている。調節器の飽和検出器と
しては、第1図の様な方法が良く用いられる。
In a device that performs automatic control, if the feedback is cut off or the regulator malfunctions, it will cause great damage to the controlled object. For example, if feedback is cut off in a device that controls the rotational speed of a DC motor, the output of the regulator will become extremely large, causing the motor rotational speed to increase abnormally and eventually burn out the motor. In order to prevent such accidents, there is a method of detecting that the rotation speed has become abnormally high and turning off the power to the motor. A well-known method is to detect that the output of the regulator has become saturated. As a saturation detector for a regulator, a method as shown in FIG. 1 is often used.

第1図に於いて(+),(−)は電源母線、LL
は出力リレー、Q1はトランジスタ、R1は抵抗、
D1はツエナーダイオードである。又A点は調節
器の出力に接続される。今調節器の出力電圧、つ
まり第1図の回路の入力電圧がツエナーダイオー
ドD1のツエナー電圧より低い時は、抵抗R1に電
流は流れず従つてトランジスタQ1はベース電流
が流れない為、コレクタ電流も流れず出力リレー
LLは消勢している。何らかの異常が発生し、A
点の電圧がツエナーダイオードD1のツエナー電
圧より高くなつたとするとツエナーダイオード
D1は導通し、従つて抵抗R1及びトランジスタQ1
のベースに電流が流れ、トランジスタQ1は導通
し、出力リレーLLが付勢する。ここでツエナー
ダイオードD1のツエナー電圧を調節器の通常の
出力電圧より少し高くしておけば異常が生じた事
を出力リレーLLの付勢に依り知ることができ
る。第1図の方法ではトランジスタQ1,リレー
LLは常時消勢の状態で使用する為、リレーコイ
ルの断線などが有つた場合には異常が検出できな
くなる。又、調節器の出力が両極性に振れる場合
や調節器の数が複数の場合には同じような回路が
複数個必要となり、特にリレーの数が複数個に及
べばコストがかかり不経済となる。
In Figure 1, (+) and (-) are power supply busbars, LL
is the output relay, Q 1 is the transistor, R 1 is the resistor,
D 1 is a Zener diode. Point A is also connected to the output of the regulator. Now, when the output voltage of the regulator, that is, the input voltage of the circuit shown in Figure 1, is lower than the Zener voltage of the Zener diode D1 , no current flows through the resistor R1 , and therefore no base current flows through the transistor Q1 . Output relay with no collector current flowing
LL is in decline. Some abnormality occurs and A
If the voltage at the point becomes higher than the Zener voltage of Zener diode D1 , then the Zener diode
D 1 is conductive and therefore resistor R 1 and transistor Q 1
Current flows through the base of , transistor Q 1 becomes conductive, and output relay LL is energized. If the Zener voltage of the Zener diode D1 is made slightly higher than the normal output voltage of the regulator, the occurrence of an abnormality can be detected by energizing the output relay LL. In the method shown in Figure 1, transistor Q 1 , relay
Since LL is always used in a de-energized state, if there is a break in the relay coil, it will not be possible to detect an abnormality. In addition, if the output of the regulator swings to both polarities or if there are multiple regulators, multiple similar circuits are required, and especially if the number of relays is multiple, it becomes costly and uneconomical. Become.

本考案は上記の点に鑑みなされたもので、複数
の調節器であつても単一のリレーによつて確実に
飽和検出が行なえる調節器飽和検出装置を提供す
ることを目的とする。
The present invention has been made in view of the above points, and an object of the present invention is to provide a regulator saturation detection device that can reliably detect saturation using a single relay even in the case of a plurality of regulators.

以下、本考案の一実施例について説明するが、
説明の都合上まず、調節器の数が1つの場合につ
いて第2図を用いて説明すれば、図中(+),
(−)は電源母線、ZDP,ZDNはツエナーダイオ
ード、QPはPNPトランジスタ、QNはNPNトラン
ジスタ、RP,RNは抵抗、端子Bは入力端子であ
り調節器の出力端子に接続され、又RLは出力リ
レーである。
An embodiment of the present invention will be described below.
For convenience of explanation, we will first explain the case where the number of regulators is one using Fig. 2. In the figure, (+),
(-) is a power supply bus, ZDP, ZDN are Zener diodes, QP is a PNP transistor, QN is an NPN transistor, RP, RN are resistors, terminal B is an input terminal and is connected to the output terminal of the regulator, and RL is an output It's a relay.

今入力端子Bの電圧が0vであるとすると、
(+)−ZDP−QP−RP−端子Bを通りPNPトラン
ジスタQPにベース電流が流れ、又端子B−RN−
QN−ZDN−(−)を通りNPNトランジスタQNに
ベース電流が流れPNPトランジスタQP,NPNト
ランジスタQNともONの状態となり、(+)−ZDP
−QP−RL−QN−ZDN−(−)に電流が流れ、出
力リレーRLは付勢する。入力端子Bの電圧、つ
まり調節器の出力電圧が上昇し、{(+)電圧−
(ZDPのツエナー電圧)}より高くなるとPNPトラ
ンジスタQPはOFFとなり、出力リレーRLに電流
は流れなくなり出力リレーRLは消勢する。同様
にして調節器の出力電圧が低くなり、{(−)電圧
+(ZDNのツエナー電圧)}より低くなるとNPN
トランジスタQNがOFFし、出力リレーRLは消
勢する。又、正,負いずれかの電源電圧が零にな
つた場合、出力リレーRLは消勢する。つまり本
回路は電源電圧監視も同時に行なえる訳である。
Assuming that the voltage at input terminal B is now 0v,
The base current flows through the (+)-ZDP-QP-RP-terminal B to the PNP transistor QP, and the terminal B-RN-
The base current flows to the NPN transistor QN through QN−ZDN−(−), and both PNP transistor QP and NPN transistor QN are in the ON state, and (+)−ZDP
Current flows through -QP-RL-QN-ZDN-(-), and output relay RL is energized. The voltage at input terminal B, that is, the output voltage of the regulator increases, and {(+) voltage -
(ZDP Zener voltage)} When it becomes higher than this, PNP transistor QP turns OFF, current stops flowing to output relay RL, and output relay RL is deenergized. In the same way, the output voltage of the regulator decreases, and when it becomes lower than {(-) voltage + (ZDN Zener voltage)}, NPN
Transistor QN turns OFF and output relay RL is deenergized. Further, when either the positive or negative power supply voltage becomes zero, the output relay RL is deenergized. In other words, this circuit can also monitor the power supply voltage at the same time.

次に、調節器の数が二つの場合について第3図
を用いて説明する。第3図に於いて、第2図と同
一符号を付した物は同一の機能を有する。QP1
QP2は同一のPNPトランジスタ、QN1,QN2は同
一のNPNトランジスタ、又RP1,RP2,RN1
RN2は同一の抵抗である。今端子Bの電圧が0vで
あるとすると、PNPトランジスタQP1,NPNトラ
ンジスタQN1は導通しており、従つて第3図の回
路は第4図と等価となり、従つて第4図の回路は
第2図の回路と同一の機能を有する。又端子Cの
電圧が0vの場合、第3図の回路は第5図の回路
と等価となり、これは第2図の回路と同一の機能
を有する。つまり、第3図に示す回路によれば二
つの調節器の正負両極性にわたる飽和を単一のリ
レーで確実に検出できる。
Next, a case where the number of regulators is two will be explained using FIG. 3. In FIG. 3, parts given the same reference numerals as in FIG. 2 have the same functions. QP 1 ,
QP 2 is the same PNP transistor, QN 1 and QN 2 are the same NPN transistor, and RP 1 , RP 2 , RN 1 ,
RN 2 is the same resistance. Assuming that the voltage at terminal B is now 0V, the PNP transistor QP 1 and the NPN transistor QN 1 are conductive, so the circuit in Figure 3 is equivalent to Figure 4, and therefore the circuit in Figure 4 is It has the same function as the circuit shown in FIG. When the voltage at terminal C is 0V, the circuit of FIG. 3 is equivalent to the circuit of FIG. 5, which has the same function as the circuit of FIG. 2. In other words, according to the circuit shown in FIG. 3, the saturation of the two regulators over both positive and negative polarities can be reliably detected with a single relay.

以上の説明では調節器の数が二つの場合を例に
挙げて述べたが、調節器の数が三つ以上の場合に
は異極性のトランジスタ対を必要個数直列に適宜
追加して、各トランジスタ対のベースに各調節器
の出力を同様に接続すればよいことは明らかであ
る。
The above explanation takes the case where the number of regulators is two as an example, but when the number of regulators is three or more, the necessary number of transistor pairs of different polarities are added in series, and each transistor It is clear that the output of each regulator can be connected in the same way to the base of the pair.

以上述べたように本考案によれば、制御装置を
構成する調節器の数がたとえ複数個存在しても単
一のリレーにより直接調節器の正負両極性にわた
る飽和を確実に検出できるため、装置構成が簡単
で信頼性の極めて高い検出装置を得ることができ
る。
As described above, according to the present invention, even if there are multiple regulators configuring the control device, saturation of the regulators in both positive and negative polarities can be reliably detected directly by a single relay. A detection device with a simple configuration and extremely high reliability can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来装置の回路図。第2図,第4図及
び第5図は本考案の動作説明図。第3図は本考案
の一実施例回路図である。 QN,QN1,QN2……NPNトランジスタ、QP,
QP1,QP2……PNPトランジスタ、LL,RL……
出力リレー、D1,ZDP,ZDN……ツエナーダイオ
ード、R1,RP,RN,RP1,RP2,RN1,RN2……
抵抗。
FIG. 1 is a circuit diagram of a conventional device. FIG. 2, FIG. 4, and FIG. 5 are explanatory diagrams of the operation of the present invention. FIG. 3 is a circuit diagram of one embodiment of the present invention. QN, QN 1 , QN 2 ...NPN transistor, QP,
QP 1 , QP 2 ...PNP transistor, LL, RL...
Output relay, D 1 , ZDP, ZDN ... Zener diode, R 1 , RP, RN, RP 1 , RP 2 , RN 1 , RN 2 ...
resistance.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] PNPトランジスタ及びNPNトランジスタのベ
ースが抵抗を介して共通接続されて該共通接続箇
所を入力端とするトランジスタ対を複数組備えた
ものにおいて、第1のトランジスタ対を構成する
PNPトランジスタ及びNPNトランジスタのエミ
ツタはそれぞれ正電源及び負電源にツエナーダイ
オードを介して接続し、第2のトランジスタ対を
構成するPNPトランジスタとNPNトランジスタ
とのコレクタ相互はリレーコイルを介して接続
し、かつ前記複数組のトランジスタ対のエミツ
タ・コレクタ通電路を直列に接続したことを特徴
とする調節器飽和検出装置。
A device comprising a plurality of transistor pairs in which the bases of a PNP transistor and an NPN transistor are commonly connected via a resistor and the common connection point serves as an input terminal, and constitutes a first transistor pair.
The emitters of the PNP transistor and the NPN transistor are connected to the positive power supply and the negative power supply, respectively, via a Zener diode, and the collectors of the PNP transistor and the NPN transistor constituting the second transistor pair are connected to each other via a relay coil, and A regulator saturation detection device characterized in that emitter-collector conduction paths of the plurality of transistor pairs are connected in series.
JP1976104253U 1976-08-03 1976-08-03 Expired JPS623735Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1976104253U JPS623735Y2 (en) 1976-08-03 1976-08-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976104253U JPS623735Y2 (en) 1976-08-03 1976-08-03

Publications (2)

Publication Number Publication Date
JPS5321571U JPS5321571U (en) 1978-02-23
JPS623735Y2 true JPS623735Y2 (en) 1987-01-28

Family

ID=28714409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1976104253U Expired JPS623735Y2 (en) 1976-08-03 1976-08-03

Country Status (1)

Country Link
JP (1) JPS623735Y2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917918A (en) * 1982-07-23 1984-01-30 ジヨ−ジ・クレメント・オ−ヤマ Flower pot equipped with humidifier and air conditioner
JPS6062249U (en) * 1983-10-04 1985-05-01 山岡 茂太郎 potted plant nursery
JPS634659U (en) * 1986-06-26 1988-01-13

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036405U (en) * 1973-07-27 1975-04-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036405U (en) * 1973-07-27 1975-04-17

Also Published As

Publication number Publication date
JPS5321571U (en) 1978-02-23

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