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Phones / Re: Phone Engineers On Nairaland Willing To Assist You - Part II by vclassics: 2:04am On Dec 13, 2019 |
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 |
Phones / Re: Phone Engineers On Nairaland Willing To Assist You - Part II by vclassics: 1:56am On Nov 12, 2019 |
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?? |
Romance / Re: I desire to Marry A girl from a well-to-do family But... by vclassics: 12:33pm On Dec 03, 2018 |
Dee9977:Lol Sense no go kill you bro |
Business / Re: How Old Were You When You Made Your First Million?, And How? by vclassics: 1:11pm On Nov 21, 2018 |
Mystic1: Pls dis my email- emelevee@gmail.com |
Celebrities / Re: Famous Celebrities From Abia by vclassics: 10:55pm On May 22, 2016 |
my state reppin... I think most successful Nigerian footballers are from Abia and Imo 2 Likes |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 4:41pm On May 14, 2016 |
Yemmyteespeed007:07062613781 |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 9:02am On May 12, 2016 |
Yemmyteespeed007: sure bro |
Education / Re: DIRECT ENTRY Admissions 2016 by vclassics: 8:47am On May 12, 2016 |
pweetychyka: bless you dear.... 1 Like |
Education / Re: DIRECT ENTRY Admissions 2016 by vclassics: 7:24am On May 12, 2016 |
Any MOUAU aspirant in d hauze?? is notification of result different from statement of result |
Education / Re: DIRECT ENTRY Admissions 2016 by vclassics: 7:21am On May 12, 2016 |
Any MOUAU aspirant in d hauze?? is notification of result different from statement of result |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 6:53pm On Jul 20, 2014 |
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. |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 8:24am On Jul 19, 2014 |
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* |
Nairaland / General / Re: What Do You Fear Most by vclassics: 3:31pm On Jul 17, 2014 |
Doclight: my greatest fear is death as a sinner make u live righteous life then |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 1:47pm On Jul 17, 2014 |
hyungwang: 08180077562. Bro vclassic add me too. Please. kkk |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 7:01am On Jul 17, 2014 |
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) |
Nairaland / General / Re: What Do You Fear Most by vclassics: 5:58am On Jul 17, 2014 |
glitest: Kkk, have a nice day ahead |
Nairaland / General / Re: What Do You Fear Most by vclassics: 5:49am On Jul 17, 2014 |
glitest: u most have really missed d forum when it was attacked 1 Like |
Nairaland / General / Re: What Do You Fear Most by vclassics: 5:44am On Jul 17, 2014 |
glitest: I fear that I won't be able to get rid of my addiction to Nairaland....; hmmmm Are u serious? 1 Like |
Nairaland / General / What Do You Fear Most by vclassics: 5:33am On Jul 17, 2014 |
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? |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 10:37pm On Jul 16, 2014 |
Pls let's read more and upload diagrams and symbols of dis components |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 10:30pm On Jul 16, 2014 |
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. |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 9:45pm On Jul 16, 2014 |
Pato5: sir I'm still waiting for your input. 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 |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 6:33pm On Jul 16, 2014 |
Pato5: I'm an engineering student so your info is invaluable to me. dats d spirit. Lets make d thread lively |
Science/Technology / Re: Learning Basic Engineering Skills by vclassics: 5:34pm On Jul 16, 2014 |
luvlyoracle: I AM WITH YOU. Thanks gal, let's do it together |
Science/Technology / Learning Basic Engineering Skills by vclassics: 4:01pm On Jul 14, 2014 |
~ 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. |
Sports / Re: Germany Vs Argentina: World Cup Final (1 - 0) On 13th July 2014 by vclassics: 10:47pm On Jul 13, 2014 |
Argentina really bleeped up They had millions of chances but cudn't take them. Serves them right 1 Like |
Sports / Re: Germany Vs Argentina: World Cup Final (1 - 0) On 13th July 2014 by vclassics: 7:02pm On Jul 13, 2014 |
I'm in Team Messi Team Argentina 1 Like |
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