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In the usual circuit, a pulse of voltage on the gate electrode, providing a very small current, will cause a large current to flow from anode to cathode. The SCR will stay on until the anode current is reduced to zero (which may be because it's an AC supply).
More at http://www.allaboutcircuits.com/vol_3/chpt_7/5.html
ANSWER: By applying a gate current of significant magnitude the SCR will turn on, It not an amplifier it does not amplify current it just conduct with the gate current It is possible to have more gate current then current trough it, the shut off point need not be zero voltage it can be negative to the anode or the falls below the holding current
What else can I help you with?
The conclusion of a silicon controlled rectifier?
conclusion of silicon control rectifier
What is SCR in drilling rig?
It is a silicon-controlled rectifier, converting AC to DC for use in drawworks, mud pumps, etc.:silicon-controlled-rectifier
Why Silicon Controlled Rectifier is called current controlled device?
Because it is controlled by the gate current
Why it is named silicon controlled rectifier?
i got no idea mate
What are the advantages of a silicon-controlled rectifier?
SILICON CONTROLLED RECTIFIER APPLICATIONS i) Speed control for motors ii) Temperature control for electric hot plate iii) Dimmer switch for domestic lighting iv) Dimmer control for stage lighting.
Difference between silicon-controlled rectifier and diode?
silicon controlled rectifier is a 3 terminal 4 layer device which has 2 consecutive P N junctions here the three terminals called anode, cathode and gate gate controls the conduction of the scr but diode just conducts in forward bias and blocks in reverse bias
On a silicon-controlled rectifier which wire is the anode and which the cathode?
Anode is positive, cathode is negative
When an SCR turns on it acts like n?
An SCR (Silicon Controlled Rectifier) acts like a switch when turned on. It can also be used as a rectifier.
What is the cost of silicon controlled rectifier?
A: A hockey pack package $300 a TO18 package $0.10
Why silicon controlled rectifier doesn't work in reverse biased condition?
Because when reverse biased it behaves like any other rectifier/diode.
Is a silicon controlled rectifier used for computers?
I have seen them used, yes. However it is rather rare now.
What is designed to use a small current to control a large current?
A silicon controlled rectifier falls into this category.
