yokel

I am using two PWM amplifiers for amplifying two PWM signals which are 90degree out of phase. Both the amplifiers are run from the same dc power source and common ground. I am providing the PWM signals from function generator. Now the problem is- in the output end the rising and falling of one signal is distorting the shape of another signal and vice versa. Can anyone tell me the probable reasons and how I can solve this problem. thanks a lot in advance

I am really sorry as I didn't provide enough information. It happened because of my lack of sufficient knowledge. However, now I have added some more information: > The PWM duty cycle doesn't vary. > The capacitive load I am talking about is actually a Piezoactuator. Its equivalent capacitance is 13nF and also a little resistance will be there. > The output 600 kHz signal quality must be as good as possible and shouldn't be distorted due to capacitive load as we have to drive the actuator very precisely. > I will use a typical function generator for initial input and the output voltage should be 3V. > Very roughly, 600kHz 3V square wave into 13nF with a rise/fall time 1/40th the period (a moderately sharp square) = 42ns, so the current is I = C*3V/42ns = 1.0 A. The circuit should be able to offer 1.5 A current. Please help me to design the circuit.

Hello, I am a newbie in electronics. I need to design an AMPLIFIER to amplify > A 600~650 kHz PWM signal > The input PWM signal can be taken from a function generator > The output should be 3V > The load is equivalent to a 13nF capacitor If you need any more info please let me know. It would be very nice, if someone give me some instruction, sample circuit or refer me some online resources which can be helpful for me in this regard. Detail answer will be appreciated. thanks a lot in advance :)