JPS5786918A - Feeding control circuit for inductance - Google Patents
Feeding control circuit for inductanceInfo
- Publication number
- JPS5786918A JPS5786918A JP16265180A JP16265180A JPS5786918A JP S5786918 A JPS5786918 A JP S5786918A JP 16265180 A JP16265180 A JP 16265180A JP 16265180 A JP16265180 A JP 16265180A JP S5786918 A JPS5786918 A JP S5786918A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- level
- signal
- inverted
- inductance
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE:To prevent a reactive current by varying the duty ratio of switching pulses in accordance with a decrease in frequency below some frequency. CONSTITUTION:Analog switches 20 and 30 operate alternately because a digital signal S1 and an inverted pulse turn on at a high level, and a capacitor C is charged and discharged alternately by constant-current sources 40 and 50. Then, a potential at the high-potential terminal of the capacitor C, i.e. the maximum level of a signal S2 is regulated to a DC voltage Vref, so that an output pulse S3 goes up to the high level when the level of the signal S2 is below the level of the DC voltage Vref. For this purpose, the output pulse S3 and its inverted pulse are ANDed and the result is inverted. Consequently, the duty pulse of a feed pulse S0 to a low level nears 0% as the period approximates to the infinite, and even when the period of the signal S1 increases, the time when electricity is fed to an inductance is kept constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16265180A JPS5786918A (en) | 1980-11-20 | 1980-11-20 | Feeding control circuit for inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16265180A JPS5786918A (en) | 1980-11-20 | 1980-11-20 | Feeding control circuit for inductance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5786918A true JPS5786918A (en) | 1982-05-31 |
| JPS6326404B2 JPS6326404B2 (en) | 1988-05-30 |
Family
ID=15758666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16265180A Granted JPS5786918A (en) | 1980-11-20 | 1980-11-20 | Feeding control circuit for inductance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5786918A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09156305A (en) * | 1995-12-08 | 1997-06-17 | Kokuyo Co Ltd | Caster attaching structure of display rack |
-
1980
- 1980-11-20 JP JP16265180A patent/JPS5786918A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6326404B2 (en) | 1988-05-30 |
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