Look at the circuit on the right....
The two mosfets working in a complementary way together is called CMOS.
In this setup here I have supplied the gates of the top and bottom mosfet there so that the two gates are never conducting at the same time. If they were to conduct at the same time, then current could flow from top to bottom and in a real circuit that may well blow a component....That is called 'shoot-through'.
If you look hard enough, you will see that the top pmos closes just before the bottom nmos starts to open.
You will also see that the bottom nmos then closes just before the top pmos starts to open.
There is no overlap........ The bottom ON duration is enclosed within the top OFF duration.
You can see that on the scope if you study it for a while.
Some may find it easier to visualise by looking at the two bottom left lights where the one on the left is nested within the one next to it.
When gates are rapidly moving in and out it is easy to miss the shoot-through which may be occuring, but it is important.
We have the opportunity on EC to simulate mosfet gate activity......
In the very top left mosfet settings..... turn the VTO from my default -8v up to -10v
See the LED blowing at the bottom of the right circuit.
Look at the scope traces, then turn that VTO right down and look at the nicely nested traces...no shoot-through.
The trouble with too much gap time is that circuits can be sluggish, so aim to keep these timings tightly nested but without shoot-through. Here is some more help with adjusting mosfet gate timing activity:
See here http://everycircuit.com/circuit/5521145715752960
and here http://everycircuit.com/circuit/6676866922708992
