ljmprey
Newbie level 2
Hi. I'm having a problem with an aplicaction. I want to control four lamps of high power (1200 watts). Actually i'm using a national instruments fieldpoint and a PWM module. In the power electronics i'm using IGBTS (IRGPH40F1). Each Lamp is connected to an igbt and a pwm channel. It seems to work fine for one and two lamps, but when i connect a third lamp all the igbts get damaged. I need to control four lamps simultaneusly. Does anybody have an idea why can't i connect more than two lamps simultaneously?. Attached is the circuit i'm using.
Thank you.
Thank you.