JPS5756696A - Fan speed control circuit for cooling and heating equipment - Google Patents
Fan speed control circuit for cooling and heating equipmentInfo
- Publication number
- JPS5756696A JPS5756696A JP55131577A JP13157780A JPS5756696A JP S5756696 A JPS5756696 A JP S5756696A JP 55131577 A JP55131577 A JP 55131577A JP 13157780 A JP13157780 A JP 13157780A JP S5756696 A JPS5756696 A JP S5756696A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- cooling
- control member
- electric current
- heating equipment
- 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
Landscapes
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE: To adjust the speed of fan without any stage and reduce the electrical loss accompanied by the adjustment by changing an average power of pulse and controlling the electric current for fan, especially applied for cooling and heating equipment installed on a vehicle.
CONSTITUTION: A pulse of constant cycle is generated from a pulse generator 10. The pulse is transmitted to a current control member 9. Under this condition, the pulse generator 10 is controlled by a pulse control member 11 responding to the cooling and heating conditions, thereby changing the frequency or the width of the output pulse. The average electric power of the pulse varied with the change of the frequency or width of the output pulse. The electric power is supplied to the electric current control member 9. With this construction, switching elements such as the transistors of the electric current member 9 merely repeat the ON, OFF operation, thereby reducing the heat volume. As a result, the accident accompanied by heat volume can be prevented. At the same time unnecessary power consumption will not be required.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55131577A JPS5756696A (en) | 1980-09-24 | 1980-09-24 | Fan speed control circuit for cooling and heating equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55131577A JPS5756696A (en) | 1980-09-24 | 1980-09-24 | Fan speed control circuit for cooling and heating equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5756696A true JPS5756696A (en) | 1982-04-05 |
Family
ID=15061299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55131577A Pending JPS5756696A (en) | 1980-09-24 | 1980-09-24 | Fan speed control circuit for cooling and heating equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5756696A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6188865U (en) * | 1984-11-19 | 1986-06-10 | ||
JPH02231259A (en) * | 1989-01-21 | 1990-09-13 | Wabco Westinghouse Fahrzeugbremsen Gmbh | Safety circuit |
CN106917769A (en) * | 2017-04-25 | 2017-07-04 | 李晓平 | A kind of fan vibration supervising device |
-
1980
- 1980-09-24 JP JP55131577A patent/JPS5756696A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6188865U (en) * | 1984-11-19 | 1986-06-10 | ||
JPH02231259A (en) * | 1989-01-21 | 1990-09-13 | Wabco Westinghouse Fahrzeugbremsen Gmbh | Safety circuit |
CN106917769A (en) * | 2017-04-25 | 2017-07-04 | 李晓平 | A kind of fan vibration supervising device |
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