JPS5513643A - Driving circuit for semicondutor switch - Google Patents
Driving circuit for semicondutor switchInfo
- Publication number
- JPS5513643A JPS5513643A JP8515578A JP8515578A JPS5513643A JP S5513643 A JPS5513643 A JP S5513643A JP 8515578 A JP8515578 A JP 8515578A JP 8515578 A JP8515578 A JP 8515578A JP S5513643 A JPS5513643 A JP S5513643A
- Authority
- JP
- Japan
- Prior art keywords
- driving
- gate
- reference voltage
- circuit
- constant current
- 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
- Power Conversion In General (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
PURPOSE: To raise the degree of integration, by using a reference voltage element in common to a positive and a negative current generation circuits for producing driving currents for a P gate and an N gate to reduce the number of parts.
CONSTITUTION: A driving circuit 40 for a PNPN switching element comprises a transistor 41 for the P gate driving constant current circuit, a transistor 43 for the N gate driving constant current circuit and a common reference voltage source 45. When a control circuit 30 is turned on, a current flows through a Zener diode 45 and a series resistor 46 so that a reference voltage is produced. The reference voltage is applied to a series circuit consisting of a resistor 42 and the base of the transistor 41 for the constant current circuit for driving the P gate, thereby generating a P gate driving current. An N gate driving current is generated by the N gate driving constant current circuit in the same manner. Thus, only one reference voltage source 45 is needed for both the driving circuits. Even if the transistors 41, 43 of both the constant current circuits are driven, a thyristor can be properly turned on.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8515578A JPS5513643A (en) | 1978-07-14 | 1978-07-14 | Driving circuit for semicondutor switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8515578A JPS5513643A (en) | 1978-07-14 | 1978-07-14 | Driving circuit for semicondutor switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5513643A true JPS5513643A (en) | 1980-01-30 |
Family
ID=13850768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8515578A Pending JPS5513643A (en) | 1978-07-14 | 1978-07-14 | Driving circuit for semicondutor switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5513643A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60226220A (en) * | 1984-04-23 | 1985-11-11 | Rohm Co Ltd | Fm muting circuit |
-
1978
- 1978-07-14 JP JP8515578A patent/JPS5513643A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60226220A (en) * | 1984-04-23 | 1985-11-11 | Rohm Co Ltd | Fm muting circuit |
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