JPS54157074A - Digital set phase control system - Google Patents
Digital set phase control systemInfo
- Publication number
- JPS54157074A JPS54157074A JP6598778A JP6598778A JPS54157074A JP S54157074 A JPS54157074 A JP S54157074A JP 6598778 A JP6598778 A JP 6598778A JP 6598778 A JP6598778 A JP 6598778A JP S54157074 A JPS54157074 A JP S54157074A
- Authority
- JP
- Japan
- Prior art keywords
- time
- power source
- cpu
- trigger
- frequency
- 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.)
- Granted
Links
Landscapes
- Control Of Voltage And Current In General (AREA)
- Power Conversion In General (AREA)
Abstract
PURPOSE: To obtain the same phase control state in arbitrary regions by selecting a commercial power source frequency and selecting a trigger phase set time determined on a basis of the selected frequency above or a time, which is obrained by multiplying or dividing this trigger phase set time by factor 5/6, on a basis of selection set signals of the power source frequency.
CONSTITUTION: Commercial power source 3, frequency selection swtich 8 and a CPU are operated under 60 Hz. In the CPU, zero-crossing signal 4 is received to detect a zero-crossing time. Time t by which the half cycle of power source 3 is segmented into the proper number of equal intervals is set to the CPU previously, and the number of a segment of the power source phase after which an input digital signal instructs the turning-on of switch element 1 is discriminated, and a trigger signal is given to driving circuit 7 at a designated trigger time. The CPU stores adjusteing time t/5 obtained by subtracting set time t from time 6t/5; and when switch 8 selects 50 Hz and 60 Hz is rejected, this is discriminated just after the measurement completion of time t, and the time of measurement completion of time t/5 is defined as a triggerrable time for 50 Hz. Thus, a unit which can be used for 50 and 60 Hz regions commonly can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6598778A JPS54157074A (en) | 1978-05-31 | 1978-05-31 | Digital set phase control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6598778A JPS54157074A (en) | 1978-05-31 | 1978-05-31 | Digital set phase control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54157074A true JPS54157074A (en) | 1979-12-11 |
JPS6245792B2 JPS6245792B2 (en) | 1987-09-29 |
Family
ID=13302864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6598778A Granted JPS54157074A (en) | 1978-05-31 | 1978-05-31 | Digital set phase control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54157074A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005098971A (en) * | 2003-08-26 | 2005-04-14 | Citizen Watch Co Ltd | Clock movement |
US8740452B2 (en) | 2011-08-17 | 2014-06-03 | Eta Sa Manufacture Horlogère Suisse | Pre-adjustment of timepiece wheel set shake |
-
1978
- 1978-05-31 JP JP6598778A patent/JPS54157074A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005098971A (en) * | 2003-08-26 | 2005-04-14 | Citizen Watch Co Ltd | Clock movement |
JP4554970B2 (en) * | 2003-08-26 | 2010-09-29 | シチズンホールディングス株式会社 | Watch movement |
US8740452B2 (en) | 2011-08-17 | 2014-06-03 | Eta Sa Manufacture Horlogère Suisse | Pre-adjustment of timepiece wheel set shake |
Also Published As
Publication number | Publication date |
---|---|
JPS6245792B2 (en) | 1987-09-29 |
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