Which of the following statements about the working of SCR is INCORRECT?
1
An SCR has two states i.e., either it does not conduct, or it conducts heavily. Therefore, SCR behaves like a switch
2
Applying small positive voltage to the gate is the normal way to close an SCR because breakover voltage is usually much greater than supply voltage.
3
To open the SCR, reduce the supply voltage to zero.
4
There are two ways to turn on the SCR. One of the methods is to keep the gate open and make supply voltage lesser to the breakover voltage.