JPS6126030B2 - - Google Patents
Info
- Publication number
- JPS6126030B2 JPS6126030B2 JP5000677A JP5000677A JPS6126030B2 JP S6126030 B2 JPS6126030 B2 JP S6126030B2 JP 5000677 A JP5000677 A JP 5000677A JP 5000677 A JP5000677 A JP 5000677A JP S6126030 B2 JPS6126030 B2 JP S6126030B2
- Authority
- JP
- Japan
- Prior art keywords
- meter relay
- output voltage
- winding
- voltage
- resistor
- 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
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
【発明の詳細な説明】
本発明は電圧監視回路さらに詳しくは給電装置
の出力電圧をメータリレー等によつて監視するよ
うな場合に用いられる回路である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voltage monitoring circuit, and more specifically to a circuit used when the output voltage of a power supply device is monitored by a meter relay or the like.
給電装置の出力電圧をメータリレー等によつて
監視するためには普通第１図Ａのごとき回路が用
いられる。第１図Ａの回路は給電装置の定電流源
Ｉより給電される電圧V0を直列抵抗R1を有する
メータリレーMRLによつて監視するものである
がこの場合監視点と出力端との間に電圧降下があ
るとこの電圧降下のために出力電圧がα倍となつ
たとしてもメータリレーの指示はα倍とはならな
い。これは実際の出力端電圧とメータリレーを流
れる電流との間には第１図Ｂのごとき関係がある
からである。第１図Ｂにおいて鎖線Ａは出力端の
電圧V0に対する電圧計の理論的な電流の変化を
示し実線Ｂは実際の電圧計の電流変化を示す。図
示のごとく端子V0の電圧が零となつても電圧計
は抵抗R0の電圧降下分に該当する電流
Ｒ０Ｉ／Ｒ０＋Ｒ１＋ｒ１
が流れる。この式においてＩは定電流源電流であ
りr1はメータリレーの内部抵抗である。 A circuit such as that shown in FIG. 1A is normally used to monitor the output voltage of a power supply device using a meter relay or the like. The circuit shown in Figure 1A monitors the voltage V0 supplied from the constant current source I of the power supply device by means of a meter relay MRL having a series resistance R1 . If there is a voltage drop in , even if the output voltage becomes α times as high due to this voltage drop, the meter relay indication will not become α times as high. This is because there is a relationship as shown in FIG. 1B between the actual output terminal voltage and the current flowing through the meter relay. In FIG. 1B, the chain line A shows the theoretical change in the current of the voltmeter with respect to the voltage V 0 at the output end, and the solid line B shows the actual change in the current of the voltmeter. As shown in the figure, even if the voltage at the terminal V 0 becomes zero, a current R 0 I/R 0 +R 1 +r 1 flows through the voltmeter corresponding to the voltage drop across the resistor R 0 . In this equation, I is the constant current source current and r 1 is the internal resistance of the meter relay.
したがつて第１図Ａに示すような回路において
は出力電圧V0に比して抵抗R0による電圧降下が
無視できない場合には監視回路としては不適当で
ある。 Therefore, the circuit shown in FIG. 1A is not suitable as a monitoring circuit if the voltage drop due to the resistor R 0 is not negligible compared to the output voltage V 0 .
本発明の目的は２巻線のメータリレーを用いて
メータリレー等に流れる電流のうちこの電圧降下
分による電流を打消し、メータリレー等に流れる
電流を出力電圧に比例するようにした電圧監視回
路を提供することにある。 The purpose of the present invention is to provide a voltage monitoring circuit that uses a two-winding meter relay to cancel out the current caused by this voltage drop among the current flowing through the meter relay, etc., and to make the current flowing through the meter relay etc. proportional to the output voltage. Our goal is to provide the following.
本発明によれば定電流を給電する定電流源の出
力電圧端を該定電流源と該出力電圧端との間に設
けられた監視点において電圧計により監視する回
路において前記監視点と前記出力電圧端との間に
電圧降下を発生する抵抗R0が存在する場合前記
電圧計として２巻線のメータリレーを使用し、該
メータリレーの第１の巻線（内部抵抗r1）を直列
抵抗R′1を介して給電線路に接続し、該メータリ
レーの第２の巻線（内部抵抗r2）を抵抗R′2を介し
て前記抵抗R0と前記出力電圧端との接続点に接
続し、前記諸抵抗と前記メータリレーの巻線比n1
との間に
n1＝Ｒ′２＋ｒ２／Ｒ′１＋ｒ１
なる関係をもたせることにより前記メータリレー
の振れを前記出力電圧に比例した指示をあたえる
ようにしたことを特徴とする電圧監視回路が提案
される。 According to the present invention, in a circuit that monitors the output voltage terminal of a constant current source that supplies constant current with a voltmeter at a monitoring point provided between the constant current source and the output voltage terminal, the monitoring point and the output voltage terminal are connected to the output voltage terminal. When there is a resistance R 0 that causes a voltage drop between the voltage terminal and the voltage terminal, a two-winding meter relay is used as the voltmeter, and the first winding (internal resistance r 1 ) of the meter relay is connected to a series resistance. Connect to the power supply line via R′ 1 , and connect the second winding (internal resistance r 2 ) of the meter relay to the connection point between the resistor R 0 and the output voltage terminal via resistor R′ 2 and the winding ratio n 1 of the various resistors and the meter relay
A voltage monitoring circuit characterized in that by providing a relationship of n 1 =R' 2 +r 2 /R' 1 +r 1 between the meter relay and the meter relay, an instruction is given to the deflection of the meter relay in proportion to the output voltage. is proposed.
以下本発明にかかる電圧監視回路の実施例につ
いて図面により詳細に説明する。 Embodiments of the voltage monitoring circuit according to the present invention will be described in detail below with reference to the drawings.
第２図は本発明にかかる回路を示し、図示のご
とくメータリレーとして巻数比：n1なるメータリ
レーを用い、巻線１を直列抵抗R′1を介して給電
線路に接続し、巻線２には図示の如く抵抗R′2を
介して負荷および抵抗R0の接続点に接続する。 FIG. 2 shows a circuit according to the present invention. As shown in the figure, a meter relay with a turns ratio of n 1 is used as the meter relay, winding 1 is connected to the power supply line via a series resistor R' 1 , and winding 2 As shown in the figure, it is connected to the connection point of the load and the resistor R0 via the resistor R'2 .
一般にメータリレーの指針の振れは巻線１およ
び２のアンペアターンの差に比例するので振れ角
をθとすれば
θai1−i2n1 (1)
としてあたえられる。この原理を利用すると第２
図の回路においては
θａα1V0＋α2I0 (2)
としてあたえられる。第(2)式の右辺第２項を零と
すればメータリレーの振れ角θは出力電圧V0に
比例させることが可能である。この条件は
R′1＋r1＝R1 R′2＋r2＝R2
とおけばメータの巻数比n1との間に
n1＝Ｒ２／Ｒ１ (3)
なる関係をもたせることによつて容易に実現でき
る。 Generally, the deflection of the pointer of a meter relay is proportional to the difference in ampere turns between windings 1 and 2, so if the deflection angle is θ, it can be given as θai 1 −i 2 n 1 (1). Using this principle, the second
In the circuit shown in the figure, it is given as θaα 1 V 0 +α 2 I 0 (2). If the second term on the right side of equation (2) is set to zero, the deflection angle θ of the meter relay can be made proportional to the output voltage V 0 . This condition can be established by setting R' 1 + r 1 = R 1 R' 2 + r 2 = R 2 and creating the relationship n 1 = R 2 /R 1 (3) with the turns ratio n 1 of the meter. It can be easily realized.
つぎに第２図の回路の動作ならびに計算式につ
いて説明する。 Next, the operation and calculation formula of the circuit shown in FIG. 2 will be explained.
まず第２図のごとく各部の電流をきめてメータ
リレーの振れ角をθとすると、
θaN1i1−N2i2
ここにN1はメータリレーの巻線１の巻線、N2は
巻線２の巻数である。ここでθをつぎのごとくお
きかえる。 First, determine the current in each part as shown in Figure 2, and let the deflection angle of the meter relay be θ, then θaN 1 i 1 −N 2 i 2Here , N 1 is the winding of winding 1 of the meter relay, and N 2 is the winding of the meter relay. This is the number of turns of wire 2. Here, θ is replaced as follows.
θ＝kN1（i1−Ｎ２／Ｎ１i2） ＝kN1（i1−n1i2） また電流i1，i2はつぎの如く表わせる。 θ=kN 1 (i 1 −N 2 /N 1 i 2 )=kN 1 (i 1 −n 1 i 2 ) Furthermore, the currents i 1 and i 2 can be expressed as follows.
i1＝Ｖ０＋Ｒ０（Ｉ０−ｉ２）／Ｒ′１＋ｒ１
i2＝Ｒ０／Ｒ０＋Ｒ′２＋ｒ２I0
これより
i1−n1i2＝Ｖ０／Ｒ１＋Ｒ０／Ｒ１ Ｒ２／Ｒ２＋Ｒ０
I0−n1Ｒ０／Ｒ２＋Ｒ０I0
＝Ｖ０／Ｒ１＋Ｒ０／Ｒ２＋Ｒ０I0（Ｒ２／Ｒ
１−n1）(4)
ここにおいてR1＝R′1＋r1，R2＝R′2＋r2である。 i 1 =V 0 +R 0 (I 0 -i 2 )/R' 1 +r 1 i 2 =R 0 /R 0 +R' 2 +r 2 I 0From this, i 1 -n 1 i 2 =V 0 /R 1 +R 0 /R 1 R 2 /R 2 +R 0
I 0 −n 1 R 0 /R 2 +R 0 I 0 =V 0 /R 1 +R 0 /R 2 +R 0 I 0 (R 2 /R
1 −n 1 ) (4) Here, R 1 =R′ 1 +r 1 and R 2 =R′ 2 +r 2 .
振れ角θを出力電圧に比例させるためには第(4)
式の右辺第２項を零とすればよい。したがつて、
Ｒ０／Ｒ２＋Ｒ０I0（Ｒ２／Ｒ１−n1）＝０
∴n1＝Ｒ２／Ｒ１
すなわちメータリレーの２巻線の巻数比n1を第
(3)式のように設定することによつてメータリレー
の振れ角を出力電圧に比例させることができる。 In order to make the deflection angle θ proportional to the output voltage, step (4)
The second term on the right side of the equation may be set to zero. Therefore, R 0 /R 2 +R 0 I 0 (R 2 /R 1 −n 1 )=0 ∴n 1 =R 2 /R 1 , that is, the turns ratio n 1 of the two windings of the meter relay is
By setting as in equation (3), the deflection angle of the meter relay can be made proportional to the output voltage.
第１図ＡおよびＢは従来の電圧監視回路および
その動作特性図、第２図は本発明にかかる電圧監
視回路の実施例である。第２図においてMRLが
２巻線メータリレー、R2が巻線２に直列に接続
される抵抗である。
FIGS. 1A and 1B show a conventional voltage monitoring circuit and its operating characteristics, and FIG. 2 shows an embodiment of the voltage monitoring circuit according to the present invention. In FIG. 2, MRL is a two-winding meter relay, and R2 is a resistor connected in series with winding 2.
Claims (1)
定電流源と該出力電圧端との間に設けられた監視
点において電圧計により監視する回路において前
記監視点と前記出力電圧端との間に電圧降下を発
生する抵抗R0が存在する場合前記電圧計として
２巻線のメータリレーを使用し、該メータリレー
の第１の巻線（内部抵抗r1）を直列抵抗R′1を介し
て給電線路に接続し、該メータリレーの第２の巻
線（内部抵抗r2）を抵抗R′2を介して前記抵抗R0と
前記出力電圧端との接続点に接続し、前記諸抵抗
と前記メータリレーの巻線比n1との間に n1＝Ｒ′２＋ｒ２／Ｒ′１＋ｒ１ なる関係をもたせることにより前記メータリレー
の振れを前記出力電圧に比例した指示をあたえる
ようにしたことを特徴とする電圧監視回路。[Claims] 1. In a circuit that monitors the output voltage end of a constant current source that supplies constant current with a voltmeter at a monitoring point provided between the constant current source and the output voltage end, If there is a resistance R 0 that causes a voltage drop between the output voltage terminal and the voltmeter, a two-winding meter relay is used as the voltmeter, and the first winding (internal resistance r 1 ) of the meter relay is It is connected to the power supply line through a series resistor R'1 , and the second winding (internal resistance r2 ) of the meter relay is connected to the connection point between the resistor R0 and the output voltage terminal through the resistor R'2 . By connecting the various resistances and the winding ratio n 1 of the meter relay to a relationship n 1 = R' 2 + r 2 /R' 1 + r 1 , the deflection of the meter relay can be adjusted to the output voltage. A voltage monitoring circuit characterized in that it gives an instruction proportional to the voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000677A JPS53135680A (en) | 1977-05-02 | 1977-05-02 | Voltage supervisory circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000677A JPS53135680A (en) | 1977-05-02 | 1977-05-02 | Voltage supervisory circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53135680A JPS53135680A (en) | 1978-11-27 |
| JPS6126030B2 true JPS6126030B2 (en) | 1986-06-18 |
Family
ID=12846902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5000677A Granted JPS53135680A (en) | 1977-05-02 | 1977-05-02 | Voltage supervisory circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS53135680A (en) |
-
1977
- 1977-05-02 JP JP5000677A patent/JPS53135680A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53135680A (en) | 1978-11-27 |
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