Page 119 - Electromechanical Devices and Components Illustrated Sourcebook

Chapter 4 Electrical Controls 81

Axial

50 _f
50 volt Pancake

500 pf
50 volt

5 _f 10 volt
Coaxial
Dipped
2387A61
220 VAC 200 _f

Motor Run Disk

200 pf 1000 _f
220 VAC PC Board Mount 35 volt 600 VDC

5.5 _f

Sub Miniature

Motor Start Large Electrolytic
Figure 4-138 Commercial Capacitors

Schematic Symbol
Schematic Symbol

Insulating Stop
Anode Cathode
Moving Plate
Moving Plates Terminal
Figure 4-140 Diode
Axle

Fixed Plates
Fixed Plate Schematic Symbol
Terminal
Figure 4-139 Variable Capacitor
Anode (+)
Gate
Silicone Controlled Rectifiers

(SCR) Ceramic

A silicone controlled rectifier or SCR, as shown in Figure 4-141, Cathode (−) Hex Base
is essentially a diode that provides a trigger function. The Stud Mount
SCR can be turned on by applying a voltage to the gate and
therefore makes these devices particularly popular among Figure 4-141 Silicone Control Rectifier