JPS5539430A - Load driving circuit - Google Patents
Load driving circuitInfo
- Publication number
- JPS5539430A JPS5539430A JP11249878A JP11249878A JPS5539430A JP S5539430 A JPS5539430 A JP S5539430A JP 11249878 A JP11249878 A JP 11249878A JP 11249878 A JP11249878 A JP 11249878A JP S5539430 A JPS5539430 A JP S5539430A
- Authority
- JP
- Japan
- Prior art keywords
- output
- transistor
- driving circuit
- signal
- conducts
- 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
- Electronic Switches (AREA)
Abstract
PURPOSE: To secure the sudden rise of the output signal for the load driving circuit which drives the load via the photo coupler by installing the short-circuit cirucuit consisting of the photo coupler between the emitter and the base of the driving transistor and the power source.
CONSTITUTION: With application of input signals G1 and G2, LED2 has the light emission via transistors 1 and 9. As a result, driving transistor 4 conducts to generate the output to output line 7. At the fall time of the input signal, signal G3 is applied. Thus LED11 has the light emission via transistor 10, and then discharging transistor 12 conducts. As a result, the emitter and the base of teansistor 4 is short- circuited to power source V3 to secure the sudden fall for the output.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11249878A JPS5539430A (en) | 1978-09-13 | 1978-09-13 | Load driving circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11249878A JPS5539430A (en) | 1978-09-13 | 1978-09-13 | Load driving circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5539430A true JPS5539430A (en) | 1980-03-19 |
Family
ID=14588146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11249878A Pending JPS5539430A (en) | 1978-09-13 | 1978-09-13 | Load driving circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5539430A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6066130U (en) * | 1983-10-12 | 1985-05-10 | オムロン株式会社 | Non-contact input circuit |
JPH01143660U (en) * | 1988-03-23 | 1989-10-02 |
-
1978
- 1978-09-13 JP JP11249878A patent/JPS5539430A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6066130U (en) * | 1983-10-12 | 1985-05-10 | オムロン株式会社 | Non-contact input circuit |
JPH01143660U (en) * | 1988-03-23 | 1989-10-02 |
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