JPS61202189U - - Google Patents
Info
- Publication number
- JPS61202189U JPS61202189U JP8408985U JP8408985U JPS61202189U JP S61202189 U JPS61202189 U JP S61202189U JP 8408985 U JP8408985 U JP 8408985U JP 8408985 U JP8408985 U JP 8408985U JP S61202189 U JPS61202189 U JP S61202189U
- Authority
- JP
- Japan
- Prior art keywords
- overcurrent detection
- light emitting
- emitting element
- light receiving
- detection signal
- 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 4
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本案の対象とらるインバータ動作回路
の概要図、第２図は従来例を示す回路図、第３図
は本考案実施例を示す回路図。
１は交流電源、２は直流電源たる整流回路、３
はインバータ回路、７は抵抗、２０は発光素子、
２２は受光素子、２５，２６，２７は比較器。
FIG. 1 is a schematic diagram of an inverter operation circuit to which the present invention is applied, FIG. 2 is a circuit diagram showing a conventional example, and FIG. 3 is a circuit diagram showing an embodiment of the present invention. 1 is an AC power supply, 2 is a rectifier circuit that is a DC power supply, 3
is an inverter circuit, 7 is a resistor, 20 is a light emitting element,
22 is a light receiving element, and 25, 26, and 27 are comparators.
Claims (1)
流検出用抵抗と、該抵抗の両端の電圧を電源電圧
として動作する発光素子と、該発光素子と光結合
する受光素子と、該受光素子における出力が所定
レベル以上になると過電流検出信号を出力する比
較器とを備えて成るインバータの過電流検出装置
。 A current detection resistor inserted between a DC power source and an inverter circuit, a light emitting element that operates using the voltage across the resistor as a power supply voltage, a light receiving element optically coupled to the light emitting element, and an output of the light receiving element. An overcurrent detection device for an inverter, comprising a comparator that outputs an overcurrent detection signal when the overcurrent detection signal exceeds a predetermined level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8408985U JPS61202189U (en) | 1985-06-04 | 1985-06-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8408985U JPS61202189U (en) | 1985-06-04 | 1985-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61202189U true JPS61202189U (en) | 1986-12-18 |
Family
ID=30633295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8408985U Pending JPS61202189U (en) | 1985-06-04 | 1985-06-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61202189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008017649A (en) * | 2006-07-07 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Overcurrent detection circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59213280A (en) * | 1983-05-17 | 1984-12-03 | Sanyo Electric Co Ltd | Protecting device of inverter circuit |
-
1985
- 1985-06-04 JP JP8408985U patent/JPS61202189U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59213280A (en) * | 1983-05-17 | 1984-12-03 | Sanyo Electric Co Ltd | Protecting device of inverter circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008017649A (en) * | 2006-07-07 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Overcurrent detection circuit |