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GCSE     Op Amp     Amplifier System     >Comparator<     Gain     Gain Bandwidth     Inverting     Non-Inverting     Power     Summing    

Op Amp Comparator


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  GCSE    Op Amps  0 of 30    Question 1080    Comparator 
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Deadline not set1 of 30    Question 1081    Comparator 
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Deadline not set4 of 30    Question 598    Comparator 
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Deadline not set5 of 30    Question 350    Comparator 
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Deadline not set6 of 30    Question 351    Comparator 
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Deadline not set7 of 30    Question 352    Comparator 
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Deadline not set8 of 30    Question 267    Components 
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Deadline not set9 of 30    Question 193    Gain Bandwidth Product 
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Deadline not set10 of 30    Question 1497    Op Amp 
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Deadline not set11 of 30    Question 1498    Op Amp 
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Deadline not set12 of 30    Question 1499    Op Amp 
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Deadline not set13 of 30    Question 1030    Op Amp Circuits 
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Deadline not set14 of 30    Question 17    Op Amp Circuits 
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Deadline not set15 of 30    Question 18    Op Amp Circuits 
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Deadline not set16 of 30    Question 1416    Op Amp Circuits 
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Deadline not set17 of 30    Question 184    Op Amp Circuits 
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Deadline not set18 of 30    Question 186    Op Amp Circuits 
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Deadline not set19 of 30    Question 188    Op Amp Circuits 
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Deadline not set20 of 30    Question 189    Op Amp Circuits 
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Deadline not set21 of 30    Question 597    Op Amp Circuits Ideal 
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Deadline not set22 of 30    Question 348    Op Amp Circuits Ideal 
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Deadline not set23 of 30    Question 349    Op Amp Circuits Ideal 
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Deadline not set24 of 30    Question 192    Op Amp Circuits Ideal 
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Deadline not set25 of 30    Question 1494    Op Amp Gain 
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Deadline not set26 of 30    Question 1495    Op Amp Gain Bandwidth 
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Deadline not set27 of 30    Question 1496    Op Amp Gain Bandwidth 
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Deadline not set28 of 30    Question 1400    Thermistor Voltage Divider 
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Deadline not set29 of 30    Question 1401    Thermistor Voltage Divider 
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Deadline not set30 of 30    Question 1402    Thermistor Voltage Divider 
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Deadline not set  Questions 0 to 30   -->  View All  

Operational amplifiers have a very high open loop gain.
Tiny differences in the two input voltages cause the output to saturate high or low.
If V+ is higher than V- the output will be high ( low otherwise ).

Comparator Behaviour

Inverting and Non-Inverting Inputs

Op Amp Comparator

Simple Comparator Example

This has been written in the style of a project or coursework report.

Specification

Turn on the LEDs when it gets dark.

How it Works

Circuit Diagram

Op Amp Comparator

Layout Diagram

Op Amp Comparator Layout Photo

Use a comparator to control a MOSFET switch driver circuit.

Comparator Driving a MOSFET

Simulation

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