Hi, I want to simulate VDD glitch. For example I want to raise 1.2V VDD to 4-5 Volts for tens of microseconds and lower back to 1.2V. Suppose I have a high rise and fall time pulse generator (200-500 picoseconds). My concern is that some digital ICs (like CPUs) have some capacitors on them to filter supply parasitics and serve as charge reservoir. Do these capacitors hinder the high rise and fall time of the signal generator because of their time constants? Can I still get a fast changing VDD in spite of the capacitors? Thank you.