Question

The typical ratio of latching current to holding current in a 20 a thyristor is

Answer 1

one 20A (500v) thyristor used commonly is BT1532 and the ratio is 1.67

Answer 2

Answer:

Generally, latching currents are higher than the holding currents used for high rating thyristors. But they can drop to 0.4 based on the temperature as well as the driving load. Usually, the 20A thyristor used in this is BT152 and the ratio of this is 1.67.

Explanation:

The typical ratio of latching current to holding current in a 20 a thyristor is

1. 5.0

2. 2.0

3. 1.0

4. 0.5

Answer: option 2. means 2.0