Op Amp notes:
properties: high differential gain at low frequency, and large input impedance.
negative summation amplifier: why v- is virtual ground; solve for v- then ignore.
noninverting amplifier; and isolation
figuring out input impedance.
ideal rectifier, log amplifier
Original use of op amps, in analog computers.
Here summing circuit will sum any groub of voltages and the outputs will be negative.
Integration circuit: will integrate the input voltage with an intial voltage stored on a capacitor.
Differentiation circuit: which derive the input voltage and the output is negative
In inverting amp the output will be the input but multiply by negative amount.
In noninverting circuit the input will multiply by a positive amount.
also there is sample and hold circuit which cutting the input signal into segments depending on a certain frequeny and used mostly in communication. also half and full wave rectifier which rectify the input voltage espesially when it is very small because there is no voltage losses on a diod.
and precition clamper which clamps the voltage also without any losses of voltage on a diode.
and peak detector.