JPS5762629A - Detecting device for fault of thyristor circuit - Google Patents
Detecting device for fault of thyristor circuitInfo
- Publication number
- JPS5762629A JPS5762629A JP13746280A JP13746280A JPS5762629A JP S5762629 A JPS5762629 A JP S5762629A JP 13746280 A JP13746280 A JP 13746280A JP 13746280 A JP13746280 A JP 13746280A JP S5762629 A JPS5762629 A JP S5762629A
- Authority
- JP
- Japan
- Prior art keywords
- load
- thyristor
- power
- input
- output
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/18—Modifications for indicating state of switch
Landscapes
- Power Conversion In General (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
PURPOSE:To detect disconnection of a wiring to a load, by using a signal synchronized with an AC power source and a signal synchronized with the voltage between both terminals of a thyristor, in the device which detects the fault of a circuit which uses the thyristor to control AC power. CONSTITUTION:Power is supplied from an AC power source 1 to a load 3 by turning on a thyristor 2. A signal synchronized with the AC power source is detected by photocouplers 15-1 and 15-2 and is inputted to one input of an EX.OR 19, and power supply to the load 3 is detected by a photocoupler 6, and the detection output is inputted to the other input of the EX.OR 19. The output of the EX.OR 19 is inputted to one input of an EX.OR 9, and an H or L signal is given to the other input in accordance with turning-on or off of the thyristor 2. The output of the EX.OR 9 is L when the thyristor is turned on and power is supplied to the load, but the output of the EX.OR 9 is H when the wiring to the load 3 is disconnected and the load becomes open, thus detecting disconnection surely.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13746280A JPS5762629A (en) | 1980-10-01 | 1980-10-01 | Detecting device for fault of thyristor circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13746280A JPS5762629A (en) | 1980-10-01 | 1980-10-01 | Detecting device for fault of thyristor circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5762629A true JPS5762629A (en) | 1982-04-15 |
Family
ID=15199164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13746280A Pending JPS5762629A (en) | 1980-10-01 | 1980-10-01 | Detecting device for fault of thyristor circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5762629A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0220326A1 (en) * | 1985-04-26 | 1987-05-06 | Fanuc Ltd. | Input state detection circuit |
JP2010122082A (en) * | 2008-11-20 | 2010-06-03 | Omron Corp | Fault detection circuit and electric power regulator |
-
1980
- 1980-10-01 JP JP13746280A patent/JPS5762629A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0220326A1 (en) * | 1985-04-26 | 1987-05-06 | Fanuc Ltd. | Input state detection circuit |
JP2010122082A (en) * | 2008-11-20 | 2010-06-03 | Omron Corp | Fault detection circuit and electric power regulator |
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