₦airaland Forum

Hello house. I got this infinix note 3 that keeps tripping on and off.. I have changed d power flex and d problem persists.. Any solution

I do fix phones... A customer brought his tecno wx3p phone for repair.. The phone fell down and doesn't display again.. The fault is actually from the panel... Anything to get d phone display??

Dee9977:
I also have that mindset but you limit it to marrying a wife that is last born in their family ... to avoid much responsibility

Lol

Sense no go kill you bro

Mystic1:
Alright let's make this work. I've gone through the thread from the first page to the last page and I'm honestly inspired learning how people came across their fortune. I've also shared mine, became a millionaire at 23 (cryptocurrency investments and trading). 2019 is going to be a massive year for me and I'm opening up an opportunity to a few of you on here. I need dedicated people who can work. Yeah I know you all feel inspired but behind these millions are serious work. I don't want someone coming to me to beg for money, there's no free money anywhere and I honestly don't have money to dash out, but the little I have I shall give, which is pointing you to the way to make your first million next year legitimately.

To qualify, you must be in atleast one of these categories:
*You should be a graduate currently serving(preferably in schools)
*An undergraduate.
*Determined to work hard and be goal oriented.
*Ready to use your brain because this is going to be very tasking but pay will be worth the work and I guarantee you 1million by this time next year.

Please I'll repeat again, I am not giving out free money. I will only furnish you with every information you need and give you clues on how to fish then the ball will be in your court.
Interested people should drop their email, and I'll email you my contact. Thanks

Pls dis my email- emelevee@gmail.com

my state reppin...
I think most successful Nigerian footballers are from Abia and Imo

Yemmyteespeed007:
what's your whatsapp contact

07062613781

Yemmyteespeed007:
hello vclassics, I'll like to contact you, you mind giving ur contact.

sure bro

pweetychyka:
Ma candid suggestion is dat u should glance thru d pages of dis thread one after d oda, dere u myt see an aspirant of MOUAU! Den quote d person to ask any question!

I hope dis will help

bless you dear....

Any MOUAU aspirant in d hauze??
is notification of result different from statement of result

Any MOUAU aspirant in d hauze??
is notification of result different from statement of result

Transistors contn.....

MOSFETs

A Metal Oxide semiconductor Field Effect Transistor (MOSFET) is a special transistor dat can perform various functions including switching on of signals and limiting a device's power levels.

They are categorized into 2 forms- d n-channel and p-channel MOSFETs.

They are 'bi-directional in nature and have 3 terminals-d Drain, Gate and Source.

MOSFETS AND INVERTERS

The MOSFET is of great use in manufacturing inverters as it's d best switching transistor.
Basically, what ur inverter does is to invert d DC voltage of ur battery to AC output voltage. It does dat with d help of MOSFETs. That explains why d output capacity of ur inverter is majorly dependent on d power rating of its transformer and MOSFETS used.
*more on this will come as we progress*
IGBT
Insulated Gate Bipolar Transistors are a set of transistors dat integrate some of the functionalities of BJT and MOSFET (hence d name). This attribute makes them ideal switching and amplifying components.

They also have 3 terminals- Collector, Emitter and Gate.

Unlike d MOSFET, an IGBT can't switch on current in d forward direction.
Its advantages include fast switching speed, high voltage capability and zero gate drive current.

Contn......

TRANSISTORS

Transistors are eletronics components equipped with d capability of amplification of input signals.

This attribute makes them active devices.

They can also switch on signals.
Transistors usually have 3 terminals and come in different forms. The 3 major types are- BJT, MOSFET & IGBT.

BJT
Bipolar Junction Transistors (BJTs) are perhaps d most common type of transistors.
They are named bipolar cus their operation involves ELECTRONS & HOLES.

BJTs have 3 terminals-base,collector and emitter.
Now, they are of 2 types: d NPN and PNP BJTs.

NPN transistors conprise of semiconductor junctions that share a small p-doped anode.


A PNP transistor consists of 2 semiconductor junctions of n-doped materials.

Bipolar Transistor Configuration
BJTs can be configured in 3 possible ways
-common base conf.
-common emitter conf.
-common collector conf.

*pls read more on this*

Doclight: my greatest fear is death as a sinner

make u live righteous life then

hyungwang: 08180077562. Bro vclassic add me too. Please.

kkk

U could email me ur phone no wit ur NL username if you are on whatsapp so I cud add you up 2 our group (where we discuss notin but engineering)

glitest: I guess I did.

Kkk, have a nice day ahead

glitest: Yep!!...Dead serious

u most have really missed d forum when it was attacked

glitest: I fear that I won't be able to get rid of my addiction to Nairaland....;

hmmmm
Are u serious?

I have been able to realize that I got great fear towards poverty. I get easily angered, frustrated and confidence level dropped when I'm on the broke side. That is how much I fear poverty.

So friends, what do you fear most in life?

Pls let's read more and upload diagrams and symbols of dis components

Contn.......

* CAPACITORS

Capacitors are electronic devices dat store charges.
Just like resistors, they are passive components.

They also come in different forms or types. The common ones are electrolytic, ceramic and tantalum capacitors.

The electrolytic and tantalum ones are polarized (have positive and negative poles) while d ceramic type is non- polarized (no positive or negative sides).

NOTE- you can actually create a non-polarized capacitor from 2 polarized ones. E.g,
let's create a 5uf non polarized capacitor from 2 polarized ones of 10uf each.
Procedure- connect d 2 polarized ones back to back, i.e, join d positive leg of one of d electrolytic cap. to d positive leg of d other electrolytic cap., or beta still, join their negative legs together. That way, u have been able to make a non polar capacitor from 2 polarized ones. *diagram on this will come up later.*

NOTE-d longer pins (legs or terminals) of capacitors (and most electronic components) are always d positive pins (side).
The non-polarized ones always have equal legs or pins.


Electrolytic capacitors are used to filter AC signals in power supply. They also acts as couplers and decouplers. More on this will come up as we progress.

Pato5: sir I'm still waiting for your input.
I'm still young but let me add some things.
PASSIVE COMPONENTS:
RESISTOR. this is not new to a science student anyway.
it's analogous to a valve in water pipe.
the higher the resistance ( locking the valve), the lower the current (rate of flow of water).
this is the ohms law in a simplified manner.
it's is the basis of other law ; Kirchoff's law, thevenine theory, Norton's theory, superposition theory, maximum power transfer etc.
these in broad is called CIRCUIT THEOREMS..
NB. current doesn't flow. it's simply the rate electric charges (measured in columbs] flow in a circuit (electric path)
next is CAPACITORS
....... to be cont

Tanx a million times.
I actually skipped some details about dat (resistors) cus I believed we could easily goggle dat.

Friends in d house lets read more on resistor colour bands, tolerance , values; and if any questions, lets bring dem here so we could trash dem out.
Tanx a lot bro

Pato5: I'm an engineering student so your info is invaluable to me.
ride on sir..
following with a glue

dats d spirit.
Lets make d thread lively

luvlyoracle: I AM WITH YOU.

Thanks gal, let's do it together

~ Hi Greatest Engineering Students

I just completed my industrial training and wished to share some of the engineering skills and technical knowledge I acquired whilst undertaking the training.

Actually, the company I undertook the IT are into Research, Designing and Manufacturing of electronic circuits and devices like Inverters, chargers,pump control, LED Displays, etc.

They are also into transformer winding, installation and programming.

Here, we will focuse on eletronics- the basics, power supply, transformers, building of eletronic circuits and others.

So guys, let's contribute and learn from one another.
Engineering could be fun, you know?




> Let me get it started

THE BASICS OF ELECTRONICS
Now, before you can build any electronic device (be it inverter, TV or even a simple circuit like phone charger), you have to know the basics.

The Basics include: discrete components, logic gates ,ICs etc.


Discrete Electronic components: A discrete component is a single basic device that performs certain function(s) in an electronic field or system.

Here we have the likes of resistors, diodes, regulators, capacitors, transistors and thyristors.

Now these components are classified into two- d passive ones & d active ones.

The basic difference btw d two being ability to amplify signals. The active components amplify signals whereas the passive ones do not.

Resistors, capacitors, and inductors fall into passive category; transistors, thyristors are active ones.



* RESISTORS

Everyone knows the basic function of resistors (they limit current flow); there are some other functions they perform depending on their design and type.

Some of these functions include:
as sensors (by LDR), voltage divider, blockers and so on.


Resistors are probably the most common electronic components; and are of different types.

There are fixed ones and variable type

there are sensistive ones - Light Dependent Resistors (LDR) and thermistors.

Argentina really bleeped up
They had millions of chances but cudn't take them.
Serves them right

I'm in
Team Messi
Team Argentina