JPS5760729A - Pulse width modulating circuit - Google Patents
Pulse width modulating circuitInfo
- Publication number
- JPS5760729A JPS5760729A JP55134305A JP13430580A JPS5760729A JP S5760729 A JPS5760729 A JP S5760729A JP 55134305 A JP55134305 A JP 55134305A JP 13430580 A JP13430580 A JP 13430580A JP S5760729 A JPS5760729 A JP S5760729A
- Authority
- JP
- Japan
- Prior art keywords
- gamma
- pulse
- pulses
- generation time
- output
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/78—Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number
Abstract
PURPOSE:To modulate a pulse width with high precision, by modulating the pulse width of a reference pulse digitally by the output difference between two frequency dividing circuits different in frequency division ratio. CONSTITUTION:When the generation period of a pulse CP of a reference pulse generating circuit 30 is denoted as gamma, the period of an output pulse CP1 of a 1/n frequency dividing circuit 40 becomes ngamma. Meanwhile, the period of an output pulse CP2 of a 1/(n+1) frequency dividing circuit 50 becomes (n+1)gamma. When output pulses CP1 and CP2 of circuits 40 and 50 are generated simultaneously, next divided pulses CP1 and CP2 are generated after ngamma seconds and (n+1)gamma seconds, respectively. Consequently, the difference of the generation time is gamma. The second generated pulses CP1 and CP2 have generation time difference 2gamma. Similarly, the m-th generated pulses have generation time difference mgamma, and thus, the generation time difference is increased by gamma for every generation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55134305A JPS5760729A (en) | 1980-09-29 | 1980-09-29 | Pulse width modulating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55134305A JPS5760729A (en) | 1980-09-29 | 1980-09-29 | Pulse width modulating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5760729A true JPS5760729A (en) | 1982-04-12 |
Family
ID=15125177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55134305A Pending JPS5760729A (en) | 1980-09-29 | 1980-09-29 | Pulse width modulating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5760729A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008100251A (en) * | 2006-10-18 | 2008-05-01 | Arai Seisakusho Co Ltd | Flare expanding device |
-
1980
- 1980-09-29 JP JP55134305A patent/JPS5760729A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008100251A (en) * | 2006-10-18 | 2008-05-01 | Arai Seisakusho Co Ltd | Flare expanding device |
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