Title: Summa Group Corporation Announcement on the Change of Outdoor Full Color LED Display Purchase
Tender No.: 0664-0960SUMEC924
Announcement date: March 13, 2009
Deadline: March 16, 2009
Tendering Agency: Suzhou Industrial Park City Administration
Provinces and cities: Jiangsu Province - Suzhou City
Content: Jiangsu Sumeda Group Co., Ltd. was commissioned by the Suzhou Industrial Park City Administration to conduct domestic public bidding for the outdoor full-color LED display that it intends to purchase. Domestic corporate companies are welcome to bid.
1. Purchasing unit: Suzhou Industrial Park City Administration;
2. Tendering agent: Jiangsu Sumeda Group Company;
3. Tender No.: 0664-0960SUMEC924;
4. Content of bidding: outdoor full color LED display;
5. Date of initial announcement: February 22, 2009;
6. Change items and contents:
The sample delivery time is changed to 16:00 on March 13, 2009 (ie, the same as the bid registration deadline).
7. This correction announcement is also published in "Suzhou City Business Daily", China Government Procurement Network, and Suzhou Municipal Government Procurement Information Network Http://;
Company Name: Jiangsu Sumeda Group Company Contact: Zhang Rongrong Wen Tao
contact number:
fax:
As it is indicated in name of permanent magnet DC motor, the field poles of this motor are essentially made of permanent magnet. A PMDC motor mainly consists of two parts. A stator and an armature. Here the stator which is a steel cylinder. The magnets are mounted in the inner periphery of this cylinder. The permanent magnets are mounted in such a way that the N – pole and S – pole of each magnet are alternatively faced towards armature as shown in the figure below. That means, if N – pole of one magnet is faced towards armature then S – pole of very next magnet is faced towards armature.
In addition to holding the magnet on its inner periphery, the steel cylindrical stator also serves as low reluctance return path for the magnetic flux. Although field coil is not required in permanent magnet DC motor but still it is sometimes found that they are used along with permanent magnet. This is because if permanent magnets lose their strength, these lost magnetic strengths can be compensated by field excitation through these field coils. Generally, rare earth hard magnetic materials are used for these permanent magnet.
Except for Flat DC Motor , mostly dc motors are with round shape as following:
This kind of design is more elegant. Sometimes Brushed DC Motor need to work together with gearbox, in this situation, the round design are more suitable.
Common Round Dc Motor including 310 Round DC Motor, 370 round dc motor, 380 round dc motor, 385 round dc motor, 395 round dc motor, 520 round dc motor, 528 round dc motor and 3525,3530,3540 series round dc motor. Larger ones we have 545 round dc motor, 555 round dc motor and 775 round dc motor.
Also we have another type dc motor with round design, they are Brushless Dc Motor we will referred in another part.
Round DC Motor
Round Dc Motor,Electric Round Dc Motor,Mini Round Dc Motor,Customized Round Dc Motor
SHENZHEN DONGMING MOTOR CO., LTD. , http://www.dmdcmotor.com