Presentation on theme: "Component Symbols & Information Prof. Dr. Moustafa M. Mohamed Vice Dean, Faculty of Allied Medical Science, Pharos University in Alexandria."— Presentation transcript:
Component Symbols & Information Prof. Dr. Moustafa M. Mohamed Vice Dean, Faculty of Allied Medical Science, Pharos University in Alexandria
Transistors Transistors – Semiconductor component used for switching and amplification. Works as a transfer resistance device. – Values in Voltage and current ratings Maximum amplification factors (BETA) Frequency range Input Resistance Output Resistance
Transistors Types Bipolar – NPN (Positive) – PNP (Negative) FETS – J-FET – MOSFET Standard Part Numbers: 2NXX-2NXXXX
Integrated Circuits Integrated Circuits – Complete circuits manufactured using semiconductor materials integrated on a single piece of silicon (known as chips). Applications include: – Analog (amplifiers) – Digital (computers, logic devices, tuners) Values rated in voltage and current requirements/ limits for inputs and outputs.
Integrated Circuits (cont.) Types Analog – Amplifiers and regulators Digital – Counters, flip-flops, gates, computers, tuners, and filters TTL = Transistors, transistor logic, 5 V CMOS = Complimentary Metal Oxide Semiconductor, 12 V
Integrated Circuits (cont.) Lead Style/Case Styles SIP DIP Pin Grid Array Leadless – Socketed Leadless – Surface Mount
Integrated Circuits (cont.) Graphic Symbols Reference Designation = U
Switches Switch - Mechanical or electrical device that closes (makes/connects) or opens (breaks/disconnects) a circuit.
Switches (cont.) Types SPST SPDT DPDT Note: Poles = Number of connections. Throws = Number of positions
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