A capacitor is connected to a HVDC power supply which provides a minimal current. When the volage reaches the capacitor plates the dielectric material in the capacitor polarizes. Now, if there existed a barrier between the dielectric and the capacitor plate the capacitor could theoretically also operate like a transistor. If the voltage applied to the plates was high enough to break through the barrier free electrons will enter into the dielectric. My quesiton is, if this could occur would the excess electrons entering into the dielectric material cause the capacitors voltage to rise above the power supply voltage?