JPS5690312A - Switching circuit of transistor - Google Patents

Switching circuit of transistor

Info

Publication number
JPS5690312A
JPS5690312A JP16729279A JP16729279A JPS5690312A JP S5690312 A JPS5690312 A JP S5690312A JP 16729279 A JP16729279 A JP 16729279A JP 16729279 A JP16729279 A JP 16729279A JP S5690312 A JPS5690312 A JP S5690312A
Authority
JP
Japan
Prior art keywords
current
regulator
converter
circuit
transistor
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
JP16729279A
Other languages
Japanese (ja)
Inventor
Noriaki Hirose
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP16729279A priority Critical patent/JPS5690312A/en
Publication of JPS5690312A publication Critical patent/JPS5690312A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To insulate the main circuit and the control circuit, and control the switching transistor with high efficiency, by controlling the output voltage of the switching regulator which constitutes the base driving electric power source.
CONSTITUTION: The level signal having hysteresis width corresponding to the prescribed ripple which has been output by the motor current set point 1, the motor current detector 2 and the Schmitt circuit 17, etc. is provided to the switching regulator which has been constitured of the transistor (Tr) 19, the smoothing reactor 20, the capacitor 21, etc. The DC-DC converter 5 is driven by the output of this regulator, and the prescribed set point corresponding to a mean current of the armature current from the Schmitt circuit 4 is input to this converter 5. And, the main circuit and the control circuit are insulated by the converter 5, and Tr7 for controlling the load current is controlled. The output voltage of the regulator is set by a larger value of the set point of the load current and the load current detected by the detector 2.
COPYRIGHT: (C)1981,JPO&Japio
JP16729279A 1979-12-22 1979-12-22 Switching circuit of transistor Pending JPS5690312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16729279A JPS5690312A (en) 1979-12-22 1979-12-22 Switching circuit of transistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16729279A JPS5690312A (en) 1979-12-22 1979-12-22 Switching circuit of transistor

Publications (1)

Publication Number Publication Date
JPS5690312A true JPS5690312A (en) 1981-07-22

Family

ID=15847042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16729279A Pending JPS5690312A (en) 1979-12-22 1979-12-22 Switching circuit of transistor

Country Status (1)

Country Link
JP (1) JPS5690312A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009087654A (en) * 2007-09-28 2009-04-23 Nec Lighting Ltd Luminaire
CN103186152A (en) * 2011-12-29 2013-07-03 比亚迪股份有限公司 Hysteresis comparison control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009087654A (en) * 2007-09-28 2009-04-23 Nec Lighting Ltd Luminaire
CN103186152A (en) * 2011-12-29 2013-07-03 比亚迪股份有限公司 Hysteresis comparison control method

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