There are several types of connectors:
1. Low frequency circular connector
This type of connector is usually used to transmit low-frequency signals or currents, and its structural feature is circular, making it easy to rotate and dock.
Widely used in aviation, aerospace, military, communication and other fields, it is highly favored for its sturdy structure and reliable contact.

2. Rectangular connector
Rectangular connectors are characterized by their rectangular interfaces and are suitable for applications that require high-density, multi signal transmission.
Rectangular connectors are widely used in fields such as computers, communication equipment, and automation control systems due to their high transmission efficiency and easy installation.

3. Printed circuit connectors
This type of connector is specifically designed for connecting printed circuit boards and typically features miniaturization, high density, and easy installation.
Printed circuit connectors are key components for interconnecting circuit modules in fields such as electronic devices, communication terminals, and computer motherboards.

4. RF coaxial connector
RF coaxial connectors are mainly used for transmitting RF signals and have advantages such as impedance matching and good shielding effect.
RF coaxial connectors are key components for achieving stable transmission of high-frequency signals in fields such as broadcasting and television, satellite communication, and radar detection.

In summary, there are various types of connectors, each with its specific application scenarios and advantages. When selecting connectors, it is necessary to comprehensively consider their electrical performance, mechanical performance, environmental adaptability, and other factors based on actual needs.