# What are the differences between voltage and current controlled devices?

#### geogi Profile Answers by geogi

• Mar 24th, 2008

In any (electronic) device controlling parameter is current it is called current controlled device. eg bilpolar transistor- output current is a function of base current.

In any (electronic) device controlling parameter is voltage it is called voltage controlled device. eg Field effect  transistor- output current is a function of gate voltage.

It depends on the inherent physical mechanism which defines the primary (independent) controlling parameter.

#### ajay

• Oct 28th, 2014

THE RATE OF FLOW OF CHARGE IS CALED CURENT ...
THE RATE OF DOINGH WORK IS CALLED POWER

#### Agam Gupta

• Oct 29th, 2014

I will like to answer it by taking examples of some devices.
Firstly, I will consider a BJT.In case of BJT the flow of current from collector 2 emitter is controlled by the base current Ib. So BJT is a current controlled device as current in the base controls other device currents.

Next, I will take the example of FET. Here voltage between gate to source is responsible for flow of current from drain 2 source.Here voltage is controlling current, so it is a voltage controlled device.

• Feb 6th, 2015

Current is a flow of electron & voltage is a pressure of electron.

#### NAGA TEJA Profile Answers by NAGA TEJA

• Mar 16th, 2015

BJT is current controlled device..… FET is voltage controlled device...

#### Arpit shrivastava

• Feb 3rd, 2016

Can anyone tell me name of the voltage control devices and current control devices?

#### MAHI

• Mar 21st, 2016

FET and BJT

#### Qaiser Quddus

• Apr 11th, 2016

BJT is the current control device controlled through IB (Base current) by which we can ON or OFF device or the base current is responsible for flowing current from collector to emitter. So due to this current controlled mechanism this is called current controlled device where as
FET or IGBT are Voltage controlled device because their flow off current is controlled by Gate voltage VG . sor due to this type of voltage controlled they are called voltage controlled devices

#### Harshitha P K

• May 7th, 2016

BJT is a current controlled device, where the base current (Ib) is used to drive the BJT either ON or OFF, whereas, a MOSFET is a voltage controlled device, the gate voltage is used to control the switching activities.

#### Nivetha

• Jun 20th, 2016

BJT is a current controlled device, where Ib used to drive the BJT either ON or OFF, a MOSFET is a voltage controlled device, the gate voltage used to control the switching activity.

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