JPH0330784U - - Google Patents
Info
- Publication number
- JPH0330784U JPH0330784U JP9104089U JP9104089U JPH0330784U JP H0330784 U JPH0330784 U JP H0330784U JP 9104089 U JP9104089 U JP 9104089U JP 9104089 U JP9104089 U JP 9104089U JP H0330784 U JPH0330784 U JP H0330784U
- Authority
- JP
- Japan
- Prior art keywords
- connection point
- connect
- power source
- output terminal
- electric valve
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図はこの考案の一実施例によるインバータ
装置の電流検出回路を示す回路図、第２図は従来
のインバータ装置の電流検出回路を示す回路図で
ある。
図において、１は直流電流、２〜７はトランジ
スタ、８〜１３はダイオード、１４〜１６はイン
バータ出力端子、１７〜１９は直流電源、２０〜
２１はトランジスタ、２２〜２６は抵抗、２７〜
２８はダイオード、２９はコンデンサ、３０はオ
ペアンプ、３２，３３は抵抗である。なお、図中
、同一符号は同一、又は相当部分を示す。
FIG. 1 is a circuit diagram showing a current detection circuit of an inverter device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a current detection circuit of a conventional inverter device. In the figure, 1 is a DC current, 2-7 are transistors, 8-13 are diodes, 14-16 are inverter output terminals, 17-19 are DC power supplies, 20-
21 is a transistor, 22-26 are resistors, 27-
28 is a diode, 29 is a capacitor, 30 is an operational amplifier, and 32 and 33 are resistors. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
続し、その接続点を出力端子とし、上側電気弁の
出力端子と反対側の接続点を各々接続し直流電源
の正極に接続し、各々上側電気弁の出力端子と正
極との間にｎヶの逆並列ダイオードを設け、下側
電気弁の出力端子と反対側の接続点を各々接続し
第１の接続点とし、第１の接続点からインピーダ
ンス素子を介し、第２の接続点とし、第２の接続
点からｎヶのダイオードをそれぞれｎ相の出力端
子に向つて電流が流れる向きに設けたインバータ
装置において、インピーダンス素子両端の電圧を
検出する回路の電源に下側電気弁の駆動用電源を
使用することを特徴とするインバータ装置の電流
検出回路。 Connect n upper electric valves and n lower electric valves in series, use their connection points as output terminals, connect the output terminals of the upper electric valves and the connection points opposite to each other, and connect them to the positive pole of a DC power source. , n anti-parallel diodes are provided between the output terminal and the positive electrode of each upper electric valve, and the connection point on the opposite side to the output terminal of the lower electric valve is connected as a first connection point. In an inverter device in which a connection point is set as a second connection point via an impedance element, and n diodes are provided in the direction in which current flows from the second connection point toward the output terminal of each n phase, A current detection circuit for an inverter device, characterized in that a power source for driving a lower electric valve is used as a power source for a circuit that detects voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9104089U JPH0330784U (en) | 1989-08-02 | 1989-08-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9104089U JPH0330784U (en) | 1989-08-02 | 1989-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0330784U true JPH0330784U (en) | 1991-03-26 |
Family
ID=31640542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9104089U Pending JPH0330784U (en) | 1989-08-02 | 1989-08-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330784U (en) |
-
1989
- 1989-08-02 JP JP9104089U patent/JPH0330784U/ja active Pending