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Why electronics components work on D.c not work on A.c current?

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Question ajoutée par Aqib alam siddiqui , Electrical Technician , Afroz textile
Date de publication: 2015/08/01
Monirul jaman
par Monirul jaman , Deputy Manager , L&T Electrical & Automation

Circuits involving transistors need a "dc bias". It just means that you apply a positive dc voltage to the base of the transistor so that it keeps working properly.

For example take mosfet operation. An NMOS is expected to block current from drain to source until the gate is activated. If you have AC across drain to source, then it allows current to flow backwards (losing gate control).

Angelito Jr Galamgam
par Angelito Jr Galamgam , SATELLITE / RADIO BROADCAST TECHNICIAN II , Manila Broadcasting Company

Not all electronics components work on dc only. some are both dc and ac. (like capacitors, inductors,...)

When we talk of electronics components the first thing comes in our mind is transitors. this compenents works only with DC due to its characteristics and used.

transitor needs a bias of uni polarity to work. 

 

John Julius Mendoza
par John Julius Mendoza , Electronics Engineer , Meinhardt Philippines Inc.

We need a constant flow of current for Electronics components that is why we use DC not AC.

FIRST OF all i will identify customer need then i will also

Utilisateur supprimé
par Utilisateur supprimé

your question is wrong. it should be: why some of the electronics components work on DC but not on AC?

muhammed salih
par muhammed salih , Design/sales engineer , siegend systems and engineers

Electronic circuits are comprises of semiconductor devices such as transistores diodes,mosfets jfets etc. and most of the devices are unidirectional, ac flips the polarity it causes the semiconductor devices to operate in opposite to the desired operation.

Arji Jon Dela Torre
par Arji Jon Dela Torre , Design Engineer cum Pre-sales , United Security Technology LLC

DC is for low voltages and AC is for high voltages, if AC runs on a DC component it will fry the circuit.

Rostom El Baz
par Rostom El Baz , ICT-Project Engineer , Alghanim International

Hey Aqib Allam,

  You can find that electronic usually derived the name by operating voltage12-24 voltage DC such component with low electric specifications such as resistors, capacitors, converter and having a regulator that leads to these low values, While on other hand AC current for high voltage equipment that uses directly the end phase supply  power.

 

Sorry for long answer. 

feroz khan
par feroz khan , Technical Supervisor , GCS (Global Communication Systems

because the electronic components consist semiconductor materials which are not able to accept AC. 

UMAIR MUHAMMAD
par UMAIR MUHAMMAD , SUPERVISOR , Hutchinson ports Pakistan

ELECTRONICS COMPONENTS WORKS24V DC

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