JPS6465923A - Driving circuit for switching element - Google Patents

Driving circuit for switching element

Info

Publication number
JPS6465923A
JPS6465923A JP62222514A JP22251487A JPS6465923A JP S6465923 A JPS6465923 A JP S6465923A JP 62222514 A JP62222514 A JP 62222514A JP 22251487 A JP22251487 A JP 22251487A JP S6465923 A JPS6465923 A JP S6465923A
Authority
JP
Japan
Prior art keywords
current
base
driving circuit
switching element
oscillating 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
Application number
JP62222514A
Other languages
Japanese (ja)
Inventor
Yoshitaka Yuu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62222514A priority Critical patent/JPS6465923A/en
Publication of JPS6465923A publication Critical patent/JPS6465923A/en
Pending legal-status Critical Current

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  • Electronic Switches (AREA)

Abstract

PURPOSE:To remove the oscillating current of a driving circuit, to prevent the malfunction of a switching element or the breakdown of an element due to the oscillating current by connecting a high speed diode in series to the emitter or the collector of the transistor(TR) of a negative bias circuit. CONSTITUTION:When the TR 11 turns off, since a base reverse current is cut steeply, diE/dt (iE is base current) comes high, and the inductance Ls of a base wiring and a capacity Cj between the base and the emitter of the TR 11 cause LC resonance. At that time, a resonance current is supplied to the base as being the oscillating current. The driving circuit is provided with a high speed diode 4 like a Schottky diode, connected in series to the collector of TR 3 of the negative bias circuit. In the driving circuit of the switching element, constituted in such a way, since a high frequency oscillating current is prevented by the high speed diode 4, the oscillating current is not generated at all.
JP62222514A 1987-09-04 1987-09-04 Driving circuit for switching element Pending JPS6465923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62222514A JPS6465923A (en) 1987-09-04 1987-09-04 Driving circuit for switching element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62222514A JPS6465923A (en) 1987-09-04 1987-09-04 Driving circuit for switching element

Publications (1)

Publication Number Publication Date
JPS6465923A true JPS6465923A (en) 1989-03-13

Family

ID=16783623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222514A Pending JPS6465923A (en) 1987-09-04 1987-09-04 Driving circuit for switching element

Country Status (1)

Country Link
JP (1) JPS6465923A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619031A (en) * 1979-07-26 1981-02-23 Nec Corp Driving method of light write-in liquid crystal light bulb
JPS57183275A (en) * 1981-05-06 1982-11-11 Nec Corp Switching power source circuit
JPS60141012A (en) * 1983-12-28 1985-07-26 Fuji Electric Co Ltd Base drive system of single transistor
JPS61263103A (en) * 1985-05-15 1986-11-21 Mitsubishi Electric Corp Control equipment of electromagnetic solenoid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619031A (en) * 1979-07-26 1981-02-23 Nec Corp Driving method of light write-in liquid crystal light bulb
JPS57183275A (en) * 1981-05-06 1982-11-11 Nec Corp Switching power source circuit
JPS60141012A (en) * 1983-12-28 1985-07-26 Fuji Electric Co Ltd Base drive system of single transistor
JPS61263103A (en) * 1985-05-15 1986-11-21 Mitsubishi Electric Corp Control equipment of electromagnetic solenoid

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