Page 256 - Electromechanical Devices and Components Illustrated Sourcebook

218 Electromechanical Devices & Components Illustrated Sourcebook

Medium Bi-Pin

Solder Angle Plastic
Single Pin
Lug Mount
Figure 12-28 Bayonet Base Lamp Sockets

Recessed Double Contact

Colored Dome
Miniature Bi-Pin
Figure 12-26 Fluorescent Tube Bases

applications, while the miniature bi-pin is used in small appli- Panel Nut
ances and instrumentation.
Screw Terminals
Lamp Sockets Flange Base

Figure 12-27 shows a few commercial lamp sockets. Sockets
Bayonet and Screw
are commonly available with a variety of wattages, materials, Base
switches, and mounting options. Also shown is a screw socket
Figure 12-29 Bayonet Base Lamp Sockets
adaptor for mounting a candelabra base into a medium socket.
Bayonet bases are generally available with solder lug,
angle mount, or flanged plastic bases. The solder lug
socket is intended to support the lamp with the wires that
electrically connect it. A better choice for these applica- Bulb Shapes
tions is the angle mount. The base can be secured with a
nut and bolt or pop rivet. Figure 12-28 shows three typical Light bulb shapes are available in a wide variety of configu-
bayonet bases. rations designed for nearly every conceivable application.
Panel mount sockets, as shown in Figure 12-29, are com- Figure 12-30 shows a few standard shapes that are commonly
monly used in industrial equipment and instrumentation. available for incandescent lamps. The type letter specifies the
Shown are two examples of panel mount lamp sockets, the general shape. The type letter is normally followed by a number,
1
left for bayonet and screw base lamps and the right for flange which indicates the diameter of the bulb in / -inch increments.
8
base lamps. As an example, a G25 is a round globe that is 25 0.125

Appliance

Candelabra
Adapter

Ceramic
Push Through Pull Chain
Switch Switch

Figure 12-27 Medium Screw Base Lamp Sockets