Operational Amplifer Comparator Project
This project has been designed to introduce the important concept of operational amplifier comparator circuits to students. This circuit is very important as it features heavily in KS4 curriculums. It has been designed to have more than one possible outcome and therefore more than one application. It allows for good differentiation. A unique training system is also available for use alongside this project to assist students with making important design decisions.
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Uses a dual power supply
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The point at which the output changes state can be changed with a variable reference resistor
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Can be used with various sensor inputs such as an LDR or thermistor
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Battery-powered
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PCB has space for a transistor to allow higher powered outputs to be added which can be used to introduce transducer drivers
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Clear silkscreen text has been used to make construction simpler
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Professional double-sided PCB with silkscreen and solder-resist
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3 different project options are available for maximum flexibility
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Blank PCBs are available
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Suitable for Key Stages 2, 3 & 4 (ages 11 to 16)
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10-49 |
50-99 |
100-149 |
150+ |
Order Code
|
| Blank PCB |
0.75 |
0.65 |
0.55 |
0.50 |
comp PCB
|
| Kit Option 1 |
1.99 |
1.79
|
1.49
|
1.19
|
comp op1
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| Kit Option 2 |
2.29 |
2.09
|
1.79
|
1.39
|
comp op2
|
| Kit Option 3 |
2.99
|
2.79
|
2.39
|
2.19
|
comp op3
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Kit Option 1
PCB
Battery clip
Slide switch
741 Op-Amp IC
IC socket
Variable resistors
Resistors
Capacitor
2 LEDs
Kit Option 2
As option 1 but with either an LDR or thermistor, please state when ordering
Kit Option 3
As option 2 but with transducer circuit, terminal blocks and round rocker switch
A comprehensive kit is
available from our online store.
It is possible to change kit contents for example LED sizes and colours
and components can be upgraded, for example changing the DPDT slide
switch for a round rocker switch. If you have particular requirements
please contact
us
Op-Amp Comparator Schematic
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Comparator Project
