Consider the following statements about a silicon controlled rectifier:
1. It is a four layer three terminal device.
2. A very small forward current flows when the bias is below a critical value Vp.
3. For bias voltage V > Vp the device conducts large current
4. The value of Vp decreases with increasing value of current in the third terminal.
Which of the statements given above are correct?1
1, 2, 3 and 4
2
1, 2 and 3 only
3
3 and 4 only
4
1 and 2 only