JPS56139074A - Switching circuit - Google Patents
Switching circuitInfo
- Publication number
- JPS56139074A JPS56139074A JP4141980A JP4141980A JPS56139074A JP S56139074 A JPS56139074 A JP S56139074A JP 4141980 A JP4141980 A JP 4141980A JP 4141980 A JP4141980 A JP 4141980A JP S56139074 A JPS56139074 A JP S56139074A
- Authority
- JP
- Japan
- Prior art keywords
- gate
- output
- trigger element
- high level
- circuit
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Power Conversion In General (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
PURPOSE:To simplify a trigger circuit in a switching circuit by commonly connecting one end of a gate trigger element to one output end of a DC power source circuit, and operating a logic circuit element in response to the gate trigger element to generate a gate signal. CONSTITUTION:When a high level signal is produced from a control circuit 19, the output of an AND gate 17 becomes high level, a transistor 22 is conducted to thus conduct a gate trigger element 2. Accordingly, the output of an OR gate 14 becomes low level to decrease the output of the AND gate 17 and to turn OFF the transistor 22. When the gate trigger element 2 is turned OFF at the zero cross position of an AC power source 1, the output of the OR gate 14 become high level, one input of the AND gate 17 gradually increases. When it reaches a predetermined level, the output of the AND gate 17 becomes high level to conduct the transistor 22 and thereby conduct the gate trigger element 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4141980A JPS56139074A (en) | 1980-03-31 | 1980-03-31 | Switching circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4141980A JPS56139074A (en) | 1980-03-31 | 1980-03-31 | Switching circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56139074A true JPS56139074A (en) | 1981-10-30 |
JPH0253969B2 JPH0253969B2 (en) | 1990-11-20 |
Family
ID=12607828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4141980A Granted JPS56139074A (en) | 1980-03-31 | 1980-03-31 | Switching circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56139074A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5478470A (en) * | 1977-12-02 | 1979-06-22 | Mitsubishi Electric Corp | Ignition equipment for dc breaker |
-
1980
- 1980-03-31 JP JP4141980A patent/JPS56139074A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5478470A (en) * | 1977-12-02 | 1979-06-22 | Mitsubishi Electric Corp | Ignition equipment for dc breaker |
Also Published As
Publication number | Publication date |
---|---|
JPH0253969B2 (en) | 1990-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE28957T1 (en) | CIRCUIT BREAKER, ESPECIALLY TRANSISTOR CIRCUIT BREAKER. | |
JPS5648725A (en) | Mosfet circuit | |
JPS56139074A (en) | Switching circuit | |
JPS57103522A (en) | Power supply device | |
JPS5781630A (en) | Electronic circuit | |
JPS5546681A (en) | Current switching type logic circuit | |
JPS5597601A (en) | Driving circuit for electromagnetic valve | |
JPS56111320A (en) | Voltage switching control circuit | |
JPS5723318A (en) | Comparator using programable unijunction transistor | |
JPS56123781A (en) | Electric power control device | |
JPS5544238A (en) | Signal switching circuit | |
JPS5735416A (en) | Input circuit | |
JPS5666930A (en) | Input circuit | |
JPS55100735A (en) | Oscillation circuit | |
JPS54105754A (en) | Power circuit system | |
JPS57130128A (en) | Switching power supply circuit | |
JPS57135390A (en) | Time switch | |
JPS57137906A (en) | On-and-off controller | |
JPS557000A (en) | Crystal oscillation circuit device | |
JPS554132A (en) | Schmitt circuit | |
JPS5730908A (en) | Capacity type displacement conversion device | |
JPS55141826A (en) | Input circuit for integrated circuit | |
JPS5711535A (en) | Integrated logical circuit | |
JPS5730412A (en) | Voltage comparison circuit | |
JPS6416016A (en) | Output buffer for mos semiconductor integrated circuit |