Build your own lab

By: Karim El-Rayes

Build your own lab Do you want to build some electronic projects

at home ???

Do you want to have a small homemade lab for your academic experiments ???

What do you will need to start building your own circuit ???

Tools and equipments you will need

Small digital Multimeter

DMM.

Bread board

Bread board to build your prototype circuits and test them.

AC/DC 12v adaptor

This adaptor convert 220v AC to 12v DC to be your power supply

for your circuit.

Resistors

You will need some

resistors with different

values, these values are

commonly used in

beginners circuits.

Values

330 Ω

1 KΩ

4.7 KΩ

10 KΩ

22 KΩ

47 KΩ

100 KΩ

1 MΩ

100 KΩ variable

Capacitors

You will need some

capacitors with different

values, these values are

commonly used in

beginners circuits.

Values

0.01 µF

0.1 µF

1 µF

4.7 µF

10 µF

47 µF

100 µF

220 µF

40 nF variable

Inductors You will need some

inductors with different

values, these values are

commonly used in

beginners circuits.

However the values

available in the market are

dependable on the market

demand, so no values will

be mentioned.

Diodes

You will need some diodes and full wave rectifiers to use in your circuits.You can use these types of diodes in your circuit: 1N4001 and 1N4004.

Full wave rectifiersThey are the four rectifying diode bridge circuit in one package.Inputs are the ~ terminals and the outputs are the + & - terminals.Bridge part number W005 will be suitable but there is variety in this part so choose what you like to use. Get datasheets for other bridge parts from:www.datasheetcatalog.com

Zener diodes

You may need

zener diodes in

your circuit, use

zener 5v and

zener 12v diodes.

LEDSure you will need some LED’s as indicators in your circuit, but take care to connect a 330Ω or 1KΩ resistor in series with the LED to protect it from over current and voltage.LED has no part number.

Transistors

You will need some

transistors to work on them.

I recommend two types to

work on them.Get datasheets of these

transistors from:

www.datasheetcatalog.com

TIP41 power NPN BJT transistor

2N2222 NPN BJT transistor

Voltage regulatorsVoltage regulators are cheap IC’s used to regulate input voltage by lowering it from higher voltage to a lower constant voltage level, used for protecting electronic circuits.They look like power transistors.Terminals connection:1: input voltage.2:ground.3: regulated output voltage 5v or 12v.Get there datasheets from:www.datasheetcatalog.com

IC#: 7805 5v regulator and781212v regulator

741 Operational amplifier Operational amplifier or shortly called Op-Amp is the basic building block for analog electronic systems, op-amp can perform many functions like amplifier, voltage summer, integrator, buffer and many other applications.use Op-amp IC# : 741, get its data sheet from:www.datasheetcatalog.com

555 timer/oscillator 555 is one of the famous IC in the electronics field, sure will use it in you circuits. It can function many tasks but the most famous function is square wave oscillator.Get 555 datasheet from:www.datasheetcatalog.com

Logic gates If you are interested in digital

electronics you ’d like to use

logic gates.

Mentioned in this table 74xx

TTL logic family part numbers.

Part number Description

7400 NAND

7402 NOR

7404 NOT

7408 AND

7432 OR

7486 XOR

7474 D-flip flop

7476 J-K flip flop

7448,7447 7 segment driver

7407 Open collector buffer

Some other digital modules

Mentioned in the table

some other digital

modules you would like to

use.

For more information get

there datasheets from:

www.datasheetcatalog.com

Part number Description

74154 4x16 decoder

74151 8x1 Mux

7490 BCD counter

74393 Binary counter

74373 Tri-state latches

74245 Octal buffers

Wires and connections

You will wires to connect your circuit on the breadboard, I recommend to use Ethernet cable cause it little bit soft and be easily bended and reconfigured inside the circuit.

These wires

Tools you will needWire cutter

Soldering iron

Screw drivers

Plier

Soldering wireSoldering flux

Example #1: simple power supply

5v power supply circuit

Example #2: LED flasher using 555