What does these electric components represent?

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1)
Opamp (operational amplifier)
2)
could be a Voltage Source (usually there is a symbol in the circle)
3)
Constant Current Source
 
the first one looks like a comparator, not an opamp.
 
opamps can be comparators...
 
its been a while since i went thru opamps. but as far as i remember, opamps are made up of comparators.
 
jablonsky27 said:
its been a while since i went thru opamps. but as far as i remember, opamps are made up of comparators.

Comparators as well as inverting amps, non-inverting amps, summers, differentiators, and integrators, etc are made up of op-amps. A comparator is an application of an op-amp.
 

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