JPS6454502A - Controller for dc load - Google Patents
Controller for dc loadInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-08-25 JP JP21194187A patent/JPS6454502A/en active Pending
Patent Citations (2)
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)
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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