JPS6454502A - Controller for dc load - Google Patents

Controller for dc load

Info

Publication number
JPS6454502A
JPS6454502A JP21194187A JP21194187A JPS6454502A JP S6454502 A JPS6454502 A JP S6454502A JP 21194187 A JP21194187 A JP 21194187A JP 21194187 A JP21194187 A JP 21194187A JP S6454502 A JPS6454502 A JP S6454502A
Authority
JP
Japan
Prior art keywords
pulse width
control signal
modulation control
width modulation
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
JP21194187A
Other languages
Japanese (ja)
Inventor
Yasushi Nakanishi
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 JP21194187A priority Critical patent/JPS6454502A/en
Publication of JPS6454502A publication Critical patent/JPS6454502A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To output a pulse width modulation control signal which is not superposed hourly to plural kinds of DC loads, by providing two kinds of comparators for detecting whether a voltage of a fundamental frequency is low or not, and outputting the pulse width modulation control signal. CONSTITUTION:A triangular wave generating circuit 1 outputs a triangular wave being a fundamental frequency signal. The first and the second pulse width setting circuits 2, 3 output pulse width setting voltages whose levels are different from each other, and a voltage V2 of the circuit 3 is set to a higher level than that of a voltage V1 of the circuit 2. A pulse width modulation control signal outputted from the first comparing circuit 4 becomes an ON-level by a prescribed time T1 from a leading edge in one period T of a triangular wave signal. On the other hand, a pulse width modulation control signal outputted from the second comparator 5 becomes ON by a prescribed time T2 coinciding with a trailing edge in one period T. Accordingly, the pulse width modulation control signal which is not superposed hourly to kinds of DC loads can be outputted.
JP21194187A 1987-08-25 1987-08-25 Controller for dc load Pending JPS6454502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21194187A JPS6454502A (en) 1987-08-25 1987-08-25 Controller for dc load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21194187A JPS6454502A (en) 1987-08-25 1987-08-25 Controller for dc load

Publications (1)

Publication Number Publication Date
JPS6454502A true JPS6454502A (en) 1989-03-02

Family

ID=16614226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21194187A Pending JPS6454502A (en) 1987-08-25 1987-08-25 Controller for dc load

Country Status (1)

Country Link
JP (1) JPS6454502A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095781A (en) * 2006-10-10 2008-04-24 Chugoku Electric Power Co Inc:The Shaft cover
US9770158B2 (en) 2014-04-23 2017-09-26 Olympus Corporation Holding mechanism for endoscope guide member, and endoscope

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144903A (en) * 1981-12-09 1983-08-29 スペリ−・コ−ポレ−シヨン Pulse width modulation controlling circuit for double solenoid
JPS6170602A (en) * 1984-09-14 1986-04-11 Hitachi Ltd Controller for operation of robot

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144903A (en) * 1981-12-09 1983-08-29 スペリ−・コ−ポレ−シヨン Pulse width modulation controlling circuit for double solenoid
JPS6170602A (en) * 1984-09-14 1986-04-11 Hitachi Ltd Controller for operation of robot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095781A (en) * 2006-10-10 2008-04-24 Chugoku Electric Power Co Inc:The Shaft cover
US9770158B2 (en) 2014-04-23 2017-09-26 Olympus Corporation Holding mechanism for endoscope guide member, and endoscope

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