JPS5579680A - Driving circuit for combined-switch - Google Patents

Driving circuit for combined-switch

Info

Publication number
JPS5579680A
JPS5579680A JP15402578A JP15402578A JPS5579680A JP S5579680 A JPS5579680 A JP S5579680A JP 15402578 A JP15402578 A JP 15402578A JP 15402578 A JP15402578 A JP 15402578A JP S5579680 A JPS5579680 A JP S5579680A
Authority
JP
Japan
Prior art keywords
transistor
primary
transformer
coupled
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
Application number
JP15402578A
Other languages
Japanese (ja)
Other versions
JPS5918948B2 (en
Inventor
Seiya Azuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15402578A priority Critical patent/JPS5918948B2/en
Publication of JPS5579680A publication Critical patent/JPS5579680A/en
Publication of JPS5918948B2 publication Critical patent/JPS5918948B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the storage effect of the primary switching transistor and to enable the reduction in the capacity of an auxiliary power source, by changing the base current of the primary switching transistor between two or more levels synchronously with the closing of the secondary switching transistor.
CONSTITUTION: The secondary winding of a pulse transformer T2 is connected to the base and emitter of the primary transistor Q1. Pulses are supplied to the primary winding of the transformer T2 from a pulse width control circuit 1 through a resistor R1. A current IR2 is supplied from the primary winding of the transformer T2 to another pulse width control circuit 6 through another resistor R1. Both the ends of the secondary winding T1S2 of another transformer T1 are connected to the input terminals of a rectification circuit 4. The positive output terminal of the rectification circuit 4 is coupled to the collector of the secondary transistor Q2. The negative output terminal of the rectification circuit 4 is coupled to the negative input terminal of a smoothing circuit 5. The emitter of the secondary transistor Q2 is coupled to the positive input terminal of the smoothing circuit 5. This results in reducing the storage effect of the primary transistor Q1 and enabling the reduction in the capacity of an auxiliary power source.
COPYRIGHT: (C)1980,JPO&Japio
JP15402578A 1978-12-13 1978-12-13 Composite switching drive circuit Expired JPS5918948B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15402578A JPS5918948B2 (en) 1978-12-13 1978-12-13 Composite switching drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15402578A JPS5918948B2 (en) 1978-12-13 1978-12-13 Composite switching drive circuit

Publications (2)

Publication Number Publication Date
JPS5579680A true JPS5579680A (en) 1980-06-16
JPS5918948B2 JPS5918948B2 (en) 1984-05-01

Family

ID=15575252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15402578A Expired JPS5918948B2 (en) 1978-12-13 1978-12-13 Composite switching drive circuit

Country Status (1)

Country Link
JP (1) JPS5918948B2 (en)

Also Published As

Publication number Publication date
JPS5918948B2 (en) 1984-05-01

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