JPS5520586A - Power control unit - Google Patents

Power control unit

Info

Publication number
JPS5520586A
JPS5520586A JP9403478A JP9403478A JPS5520586A JP S5520586 A JPS5520586 A JP S5520586A JP 9403478 A JP9403478 A JP 9403478A JP 9403478 A JP9403478 A JP 9403478A JP S5520586 A JPS5520586 A JP S5520586A
Authority
JP
Japan
Prior art keywords
load
flowing
emitter
current
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.)
Pending
Application number
JP9403478A
Other languages
Japanese (ja)
Inventor
Takeshi Kuriyama
Yoshikazu Nishitani
Takashi Miyahara
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP9403478A priority Critical patent/JPS5520586A/en
Publication of JPS5520586A publication Critical patent/JPS5520586A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To prevent the excessive current from flowing to the small-power load by connecting the gate of the thyristor to the phase-shift signal circuit to give the conduction control for a fixed time to the current flowing to the load by the transistor and at the zero current point.
CONSTITUTION: The serial circuit of the collector and the emitter of load 13 and transistor Tr14 is connected to AC power source 11 via rectifier 12. Then resistance 15 is connected between the joint of rectifier 12 and load 13 and the base of Tr14, and at the same time phase-shift signal circuit 16 is connected between the joint and the emitter of Tr14. Furthermore, thyristor SCR17 is connected between the base and the emitter of Tr14, and the gate of SCR17 is connected to circuit 16. As a result, Tr14 gives the conduction control for a fixed time to the current flowing to load 13 at the zero current point, thus preventing the excessive current from flowing to the small-power load.
COPYRIGHT: (C)1980,JPO&Japio
JP9403478A 1978-07-31 1978-07-31 Power control unit Pending JPS5520586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9403478A JPS5520586A (en) 1978-07-31 1978-07-31 Power control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9403478A JPS5520586A (en) 1978-07-31 1978-07-31 Power control unit

Publications (1)

Publication Number Publication Date
JPS5520586A true JPS5520586A (en) 1980-02-14

Family

ID=14099274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9403478A Pending JPS5520586A (en) 1978-07-31 1978-07-31 Power control unit

Country Status (1)

Country Link
JP (1) JPS5520586A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423478A (en) * 1981-07-20 1983-12-27 Xerox Corporation Phase controlled regulated power supply
JP2013172641A (en) * 2012-02-21 2013-09-02 Lg Innotek Co Ltd Radio power reception apparatus and power management method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423478A (en) * 1981-07-20 1983-12-27 Xerox Corporation Phase controlled regulated power supply
JP2013172641A (en) * 2012-02-21 2013-09-02 Lg Innotek Co Ltd Radio power reception apparatus and power management method thereof

Similar Documents

Publication Publication Date Title
JPS57124909A (en) Output transistor protection circuit
JPS5520586A (en) Power control unit
JPS5418663A (en) Gate control unit for thyristor valve
JPS53107640A (en) Grounding fault detector
JPS5317932A (en) Electric current source circuit
JPS52131139A (en) Three phase ac voltage control circuit
JPS53103138A (en) Thyristor fault detector
JPS5332330A (en) Current type inverter and its controlling
JPS54161850A (en) Magnetic bubble device
JPS542954A (en) Powe source circuit of direct current arc welding equipment
JPS5640924A (en) Direct current constant voltage power source
JPS54105736A (en) Power circuit
JPS53118756A (en) Constant voltage power source circuit
JPS5523549A (en) Electric device
JPS53131447A (en) Control of power invertor in use for power trfnsmission
JPS5494647A (en) Overcurrent protective circuit
JPS531017A (en) Protective circuit
JPS5321437A (en) Induction heating device
JPS5489216A (en) Dc power unit
JPS5249419A (en) D.c. current transformer
JPS5376320A (en) Inverter for transistor
JPS559272A (en) Great and constant current power supply system with high speed response
JPS5231353A (en) Ac switch controlling device
JPS5268925A (en) Starting apparatus for inverter
JPS5244151A (en) Control equipment of gate turn-off thyristor