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Product details

Product Description

DC Motor

-Characteristic
1.Compared with the LDO of linear regulators, high efficiency is a significant advantage of DCDC. Usually, the efficiency is above 70%, and the high efficiency can reach over 95%.
2. Adapt to a wide voltage range.

-Classification
In switching DC-DC converters, transistors operate as switches, which means they consume much less power than transistors operating as current dependent sources. When a transistor conducts high current, its voltage drop is very low, while when a transistor conducts high voltage drop, its current is almost zero. Therefore, the switching mode converter has low conduction loss and high efficiency, usually above 80% or 90%. But at high frequencies, switching losses can reduce efficiency, and the higher the switching frequency, the higher the power.

DC motors are divided into three categories based on excitation methods: permanent magnet, separate excitation, and self-excitation, among which self-excitation is further divided into parallel excitation, series excitation, and composite excitation.

Brushes and commutators
Unlike other types of motors, such as brushless DC motors and AC induction motors, BDC motors do not require a controller to switch the direction of current in the electrode winding, but instead complete the commutation of the BDC motor winding mechanically. There is a segmented copper sleeve installed on the shaft of the BDC motor, called a commutator. As the motor rotates, the carbon brush will slide along the commutator and make contact with different segments of the commutator. These segments are connected to different rotor windings, so when energized through the motor's brushes, a dynamic magnetic field is generated inside the motor. It is important to note that the brush and commutator are the most easily worn parts in BDC motors due to their relative sliding.

Permanent magnet
Permanent Magnet Brushed DC (PMDC) motors are the most common BDC motors in the world. This type of motor uses permanent magnets to generate a stator magnetic field. PMDC motors are typically used in applications including fractional horsepower motors, as permanent magnets are more cost-effective than winding stators. The disadvantage of PMDC motors is that the magnetic properties of permanent magnets gradually decline over time. Some PMDC motors also have windings wound around their permanent magnets to prevent magnetic loss. The linearity of the performance curve (voltage speed relationship curve) of PMDC motors is very good. There is a linear relationship between current and torque. Due to the constant stator magnetic field, this type of motor responds very quickly to voltage changes.

Company Information

Shenzhen Go-Gold Motor Co., Ltd established in 2015, which specialized in manufacturing in various of Universal motor, DC motor, Induction motor and Brushless motor that are widely applied to household appliances, intelligent home, electric tools, medical equipment etc.

The factory occupies more than 30,000 square meters, the annual turnover is more than 60 million dollars with production volume of 20 million units. With a group of 150 professional technicians and quality controlling, and the advanced equipment of research & development, producing and quality inspection that is to control a strict design and quality assurance.

Most of the motor are mainly exported to Europe, US, Japan, Korea, Brazil, etc. Following the development of national macroeconomic strategy and expanding domestic demand, we have been more focused on the internal market. Go-Gold Motor is a company that provides professional technical guidance and best after-sale service to satisfy every customer with the principle "Quality and Reputation Always Come First".

We set up an R& D Center in Shenzhen, combining the Motor Technical Center of university and Mental R& D Center, to provide a best service, innovative and energy-efficient product, starting from staff training, product designing with one-station service to provide a best motor solution to our clients.