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SCR
It has the same charactaristics as the diode, current flowing from cathode to anode, when the anode is positive with respect to the cathode.
However, it will only do this when the gate is also positive with respect to the cathode.
In the circuit, with the switch open as shown, no current...
Because of high electron velocity(mobiliti) and low hole velocity (mobiliti), NMOS is faster than PMOS.
The carriers in NMOS are Electrons and in PMOS are holes.
SAW
SAW filter
(Surface Acoustic Wave filter) A semiconductor device that is used to filter out desired frequencies. Widely used in mobile phones to filter both RF and IF frequencies, a SAW filter uses the piezoelectric effect to turn the input signal into vibrations that are turned back into...
PLL fundamentals
The block is a frequency divider for example N=10 means frequncy of feedback signal is a tenth of frequncy of output signal.
Also you can use Carlson's book by name"Communication Systems".
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