Main Category of Electrical
The classification of
electrical connectors and application
allows the current in the circuit is blocked at the barrier
or isolated circuit can flow to achieve the intended
function of the circuit. Some connectors are made in the
form of an ordinary socket, cable industry has been widely
recognized and used.
Over the years the
classification of electrical connectors confusion, all
manufacturers have their own classifications and standards.
The National Electronic Distributors Association (NEDA, the
National Electronic Distributors Association) hosted in 1989
developed a set of known classifications of the connector
parts package (Levels of Packaging) standards. According to
the criteria, communication links typically use four
connectors. And applications to discuss the connector.But
just for learning and classification level connector, the
actual work is rarely talked about the connector according
to the above level, but in accordance with the appearance of
the connector structure of the form and way of connecting to
name it (different structure named by the electrical
connectors internationally accepted norms to make specific
provisions in detail; In general, the different structure of
the connectors, have a different range of applications.)
Communication network connections often depend on the media,
so the connection is usually in different media,
connectivity and applications to discuss the connector.
1. Multi-line cable
connector, including DB connector and DIX connectors and DIN
(1) DB-type connectors,
including DB-9, DB-15, DB-25 connector, which is used to
connect serial devices and parallel port cable, into the
positive side and negative side, DB25 DB is represented in
the D-type connector, digital 25 representative of the
number of connector pins. DB25 connector is now commonly
used in computer components and line interface.
(2) DIX connector: it
looks like the DB-15 connector. It is slipping connection to
achieve, and DB15 connection to the fixed by screws, often
used to connect Thick Ethernet
(3) DIN connector: DIN
connector in a different arrangement of pins and needles
form, it is usually in connection Macintosh and Apple Talk
Twisted pair connections
includes two connectors: RJ45 and RJ11. RJ is to describe
the public telecom network interface, in the past, Class 4,
Category 5, Cat5e, or even the introduction of the near
Category 6 cabling, the RJ-type interfaces are used.
(1) RJ11 connectors: a
telephone line type connector supports 2 lines and 4 lines,
telephone lines are generally used for user access.
(2) RJ45 connectors: one
of the same type of connector, socket type, larger than the
RJ11 connector and supports 8 lines, is a standard
interface, commonly known as 8-bit modular, multi-network
connectivity for twisted pair . As the circuit are balanced
by its transmitter and receiver, and therefore have a high
common mode rejection capability.
3. Coaxial cable
Coaxial cable connectors
include BNC T connector and terminal connector and resistor.
(1) T connector: for
connecting coaxial cable and BNC connector.
(2) BNC connectors:
BayoNette Bayonet barrel connector for the network segment
connected to the BNC connector. Communications and computer
markets and the rapid growth of communications technology
and computer technologies have become the coaxial connector
to stimulate growth in demand for primary factors. Because
coaxial cable and BNC T-connectors connectors rely on the
connection, so BNC connectors for the industry are
optimistic about the market.
(3) Terminal: Cable
needs to termination, termination is a special connector,
which has a carefully chosen internal matching resistor
network cable properties, each of which a terminal device
must be grounded.
4) More than in the
thick cable with N-type Ethernet connector, the workstation
does not directly access to Ethernet networks, but by a
transceiver, AUI connector through a (DIX connector)
connected to the transceiver.
RF coaxial connector type
from the connection points, mainly in the following three:
(1) Thread connection
type: such as: APC-7, N, TNC, SMA, SMC, L27, L16, L12, L8,
L6, etc. RF coaxial connector. This connection in the form
of connector with high reliability, shielding effect is
good, so applications are most widely used.
(2) Outlet connector
type: such as BNC, C, Q9, Q6 and other RF coaxial connector.
This connector has the connection convenient, fast and so is
the application of the first international radio frequency
(3) line push
connection types: such as SMB, SSMB, MCX, etc., this form of
connector connected with a simple and compact structure,
small size, easy-to-small size and other characteristics.