JPS6296101U - - Google Patents
Info
- Publication number
- JPS6296101U JPS6296101U JP18826285U JP18826285U JPS6296101U JP S6296101 U JPS6296101 U JP S6296101U JP 18826285 U JP18826285 U JP 18826285U JP 18826285 U JP18826285 U JP 18826285U JP S6296101 U JPS6296101 U JP S6296101U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- circuit
- current
- series
- constant voltage
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図はそれを適用した電気―空気圧変換器を示す構
成図、第３図は本考案の他の実施例を示す回路図
である。
１１，１１Ａ……定電圧回路、１２，１２Ａ…
…スパン調整回路、Ｄｚ……定電圧ダイオード、
ＯＰ１，ＯＰ２……演算増幅器、Ｑ１……トラン
ジスタ、Ｒ１，Ｒ２，Ｒ３，Ｒｃ……抵抗、ＲＢ
，ＲＺ……可変抵抗。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a block diagram showing an electric-pneumatic converter to which the same is applied, and FIG. 3 is a circuit diagram showing another embodiment of the present invention. 11, 11A... Constant voltage circuit, 12, 12A...
...Span adjustment circuit, Dz... Constant voltage diode,
OP 1 , OP 2 ... operational amplifier, Q 1 ... transistor, R 1 , R 2 , R 3 , Rc ... resistance, RB
, RZ...variable resistance.
Claims (1)
入力電流に比例した電流を供給する電流供給回路
において、電流入力端子間の電圧を一定値に保つ
定電圧回路と、入力電流から常に一定値の電流を
分流する零点調整用の可変抵抗と、負荷に直列に
接続したスパン調整回路とを有し、定電圧回路は
、負荷に直列に挿入されたトランジスタと、入力
端子間電圧を分圧する第１および第２の抵抗の直
列回路と、この直列回路に並列に接続された第３
の抵抗および定電圧ダイオードの直列回路と、上
記第１の抵抗と第２の抵抗との接続点の出力およ
び第３の抵抗と定電圧ダイオードとの接続点の出
力を両入力とし出力を上記トランジスタの制御入
力とする第１の演算増幅器とを含み、スパン調整
回路は、負荷の他端に直列接続された抵抗と、こ
の抵抗と負荷との接続点に非反転入力端子を接続
したボルテツジホロワ接続の第２の演算増幅器と
、この第２の演算増幅器の出力端子と上記抵抗の
他端との間に接続した可変抵抗とを含むことを特
徴とする電流供給回路。 In a current supply circuit that receives an input current that changes in a predetermined width and supplies a current proportional to the input current to the load, there is a constant voltage circuit that maintains the voltage between the current input terminals at a constant value, and a constant voltage circuit that maintains the voltage between the current input terminals at a constant value. The constant voltage circuit includes a variable resistor for zero point adjustment that shunts the current, and a span adjustment circuit connected in series to the load.The constant voltage circuit includes a transistor inserted in series with the load, and a first and a second resistor series circuit, and a third resistor connected in parallel to this series circuit.
A series circuit of a resistor and a constant voltage diode, the output of the connection point between the first resistor and the second resistor, and the output of the connection point of the third resistor and the constant voltage diode are both input, and the output is connected to the transistor. The span adjustment circuit includes a resistor connected in series to the other end of the load, and a voltage follower connection in which a non-inverting input terminal is connected to the connection point between the resistor and the load. A current supply circuit comprising: a second operational amplifier; and a variable resistor connected between an output terminal of the second operational amplifier and the other end of the resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18826285U JPS6296101U (en) | 1985-12-06 | 1985-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18826285U JPS6296101U (en) | 1985-12-06 | 1985-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6296101U true JPS6296101U (en) | 1987-06-19 |
Family
ID=31139458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18826285U Pending JPS6296101U (en) | 1985-12-06 | 1985-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6296101U (en) |
-
1985
- 1985-12-06 JP JP18826285U patent/JPS6296101U/ja active Pending
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