Page 199 - Electromechanical Devices and Components Illustrated Sourcebook

Chapter 9 Connectors 161

Data Connectors
Male
In our digital lives, data connectors have become omnipresent.
Locking Clip
Most notably they are used throughout our personal computers
and the telephone system. They are also found on all manner
Female
of equipment that relies on digital controllers.
The DB (type D-suBmintire) series connectors are one of the
most common connectors within the digital world. The DB des- Figure 9-44 Centronics 36 Connector
ignation is followed by a number that is representative of the
number of pins in the connector. That is a DB 9 has 9 pins, a DB
25 has 25 pins, and so on. The HD 15 is a special version that is
for low-level signal processing, test equipment and instrumen-
normally used to connect VGA computer monitors. The DB
tation. Figure 9-44 shows a Centronics 36 connector set.
series connectors also have a set of locking screws on either end
Universal serial bus (USB) connectors have become very
of the connector. The plug will have a set of screws and the jack
popular with personal computers. This port has two different
will have a set of matching nuts. The plugs and jacks are avail-
connectors associated with it. Figure 9-45 shows the type A
able in either male or female versions. These connectors also
and B USB connectors and a pin out chart.
have applications for low-level signal processing, test equip-
ment, and instrumentation. Figure 9-43 shows a side view and
pin arrangements for the most common DB connectors.
Type A
4 3 2 1
DB 9
1 2
Type B
4 3
Pin Name Description
DB 15 1 VBUS +5 VDC
2 D− Data−
3 D+ Data+
4 GND Ground
DB 25
Figure 9-45 USB Connectors

DB 37
DIN connectors (Deusches Instiut fur Normung) are most
commonly found as the plug on your mouse and keyboard.
They are, however, used in all types of control environments
HD 15
including audio, test equipment, and instrumentation. Oftentimes
a manufacturer will replace a standard plug with a DIN con-
nector just to maintain a proprietary design. Figure 9-46 shows
examples of both standard and mini DIN connectors.
Locking Screw

Jack
Plug 4 Pin Mini-Din

5 Pin Din
Figure 9-43 DB Connectors 6 Pin Mini-Din

6 Pin Din
8 Pin Mini-Din
The Centronics 36 connector is most commonly found as a
parallel connector on printers. The male connector carries two
cutouts on either end which correspond with a pair of locking
clips on the female connector. The plugs are mated and the clips Cable End Cable End
are snapped in place. These connectors also have applications Figure 9-46 DIN Connectors