Assignment for basic electronics lab

   This assignment is to familiarize  students with common components used in electronic equipment. Each student is assigned the topic indicated against their class number. 
    You  have to write a small write up based on the indicated topics. Each assignment should be accompanied by a few pieces of the item. You can look for the items in old toys, dead radios TV's or other faulty equipment. You can also buy the component. If you buy it, the details of purchase such as the shop from which you purchased , date of purchase and the cost of the item should be indicated on the assignment. ( If the value is more than Rs 50/- you need not produce the actual item,but  the local source from where you can buy the item must be indicated.). You are encouraged to find out the items from dead equipments and junk items.
  The  write up must  have the following points


 a) Specifications ( Attach a copy of a typical specification if available)
 b) Operating principles
 c) Packaging information such as markings color codes etc if any
 d) Details of manufacturers
 e) Where did you find the items
 f) Have you submitted the  actual component( if not the reason)
 g) Picture of the item if possible.
 f) Cost of the  item
 g) References.( If you found the information on Internet , the complete web address should be given)


Some hints about where to look for the items is also given against each item.

     1	PNP transistor (minimum 2 types)
     2	NPN transistor (minimum 2 types)
     3	FET  
     4	LED ( RED blue and yellow must be submitted)
     5	LCD  ( Look for dead calculators , watches etc) 
     6	7 segment displays 
     7	Varistor 
     8	Thermistor ( look in old telephones
     9	LDR
    10	Diodes-rectifier , switching
    11	Relay 
    12	Crystal oscillator
    13	ceramic resonator ( look in dead  telephones)
    14	555 IC
    15	electrolytic capacitor
    16	Tantalum capacitor (Look for  Dead computer parts)
    17	carbon film resistor
    18	ceramic capacitor
    19	wire wound resistor
    20	trim-pots and trimmers
    21	potentiometer
    22	various sockets for electronic components
    23	Transformers ( detailed specs and design details and disassembly needed)
    24	fuse and fuse holders
    25	Mosfets
    26	toroids
    27	Inductors
    28	zener diodes
    29	variable capacitor
    30	trimmer capacitors
    31	Dry cells ( different types , battery holders etc needed)
    32	Lead acid batteries and SMF batteries ( Need not produce the items)
    33	nickel cadmium batteries
    34	nimh batteries
    35	Loud speakers and headphones
    36	switches -Common type of switches used in electronic equipments 
    37	IFTs ( Look in old cord less phones , radios etc)
    38	piezo buzzers 
    39	Copper clad sheets and PCBs
    40	SCR
    41	Triac
    42	Heat sinks
    43	Solder,fluxes  and soldering techniques
    44	ferrite and baluns
    45	common types of wires and cables used in electronics
    46	DB connectors-  9 pin and 25 pin
    47	TRS connectors
    48	Condenser microphone
    49	RCA connector
    50	F connector,BNC connector and N connector 
    51	Common screws  used in electronic equipment  
    52	Vacuum Tubes- Triodes ( look for old valve radios, don't try to disassemble it if the equipment is working.) 
    53	Vacuum Tubes -Pentodes(  )
    54	stepper motor
    55	Surface mount resistors
    56	Coaxial cable 
    57	Opto coupler( Look in old phones)
    58	Infra red LEDS and detectors ( look in old remote controls)
    59	3 pin voltage regulators
    60	Ammeters and voltmeters ( Try to get a cheap meter)


  Write your assignment and submit along  with the componet you found out on or before _____. Help for doing this assignment  will be available only via email. If you have any doubt regarding your assignment you can mail your questions to------------. You are also encouraged to submit the draft of your assignment to the above address. I will try to review the draft and getback to  you for further details.
 The  assignment should be in PDF format.
  Each assignment will be valued individually and   marks will be dependent on how much effort you put into this.

 Also try to learn what others are working on. You final examination will have questions from all the above topics.