JPS54105736A - Power circuit - Google Patents
Power circuitInfo
- Publication number
- JPS54105736A JPS54105736A JP1280978A JP1280978A JPS54105736A JP S54105736 A JPS54105736 A JP S54105736A JP 1280978 A JP1280978 A JP 1280978A JP 1280978 A JP1280978 A JP 1280978A JP S54105736 A JPS54105736 A JP S54105736A
- Authority
- JP
- Japan
- Prior art keywords
- current
- output voltage
- thyristor
- rectifier circuit
- flowing
- 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
Landscapes
- Inverter Devices (AREA)
Abstract
PURPOSE: To provide an operation of control in a manner of high response for the current flowing in the thyristor, by detecting the current of high frequency directly flowing in the thyristor element to rapidly decrease an output voltage of the power rectifier circuit if said current reaches the critical level.
CONSTITUTION: A current, flowing in thyristors 5 to 8 in a thyristor inverter 9 likely used for induction heaters, is detected by a detecting coil 12, being fed to a control circuit 14 through an amplifier 13, that provides a characteristic with the output voltage rapidly rising up from zero at around a value corresponding to the rated current value, and compared with a reference signal 16, with its difference signal inputted to a gate signal generator 3, and the output voltage of a power rectifier circuit 2 is controlled. In this way, with the current increasing in the thyristors 5 to 8 due to some reason, an output voltage of the power rectifier circuit 2 is remarkably decreased, further with the current additionally increasing, the power source 4 is made stopping, thus capable of operating a protection for the thyristor elements.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1280978A JPS54105736A (en) | 1978-02-07 | 1978-02-07 | Power circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1280978A JPS54105736A (en) | 1978-02-07 | 1978-02-07 | Power circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54105736A true JPS54105736A (en) | 1979-08-20 |
Family
ID=11815707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1280978A Pending JPS54105736A (en) | 1978-02-07 | 1978-02-07 | Power circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54105736A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62147964A (en) * | 1985-12-20 | 1987-07-01 | Sanyo Electric Co Ltd | Control circuit of inverter |
-
1978
- 1978-02-07 JP JP1280978A patent/JPS54105736A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62147964A (en) * | 1985-12-20 | 1987-07-01 | Sanyo Electric Co Ltd | Control circuit of inverter |
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