modified 10 years ago

Strange happening. Explain Please

00:47:20

So, MOSFETs dont allow current to flow from their gates to their semiconductor substrate? Thats why they are called field effect transistors. But here, from no where, as the switch mosfets switches, spike appears. Though the only power supplies are attached to ideal mosfets with ideal insulator between their gates and p semiconductor substrate, the power dosent leak into the circuit from them. From where the voltage come from????

published 10 years ago

rich11292000

10 years ago

This is not a ideal component, there are many losses not included like heat. However one of the real world characteristics it includes is capacitance from gate to source and gate to drain, some users simulate this even greater with two capacitors, one from gate to source and one from gate to drain. What you're seeing is electrons passing through the plate just like a capacitor would allow a small amount to pass. MOSFETs use a small amount of current during work.

Ashish_kumar_4

10 years ago

:/ i had thought every circuits provide ideal mosfets :/ with low capacitance. Thanks for the explanation :)

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