I am facing a problem in switching the negative half cycle of a diodes output. Diode is connected in series with 230V AC supply. Load is a capacitor. I want to cut both sides od the negative half cycle symmetrically (symmetric angle control). For this i generated PWM signal using PIC. Gate signal is varied from -9V to 0. It is made possible by using the below circuit
Now the problem comes when i give this gate signal to P-channel MOSFET 9240. I give the negative half cycle wave from the diode to the drain and the source to the other end of AC line. When i switch ON supply to drain-source, gate voltage is level shifted down to become more negative and gate wave is inverted. How to tackle this problem... please help me.. its sooo urgent
Now the problem comes when i give this gate signal to P-channel MOSFET 9240. I give the negative half cycle wave from the diode to the drain and the source to the other end of AC line. When i switch ON supply to drain-source, gate voltage is level shifted down to become more negative and gate wave is inverted. How to tackle this problem... please help me.. its sooo urgent
