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Op-amp Comparator and the Op-amp Comparator Circuit
https://www.electronics-tutorials.ws/opamp/op-amp-comparator.html#:~:text=The%20comparator%20is%20an%20electronic%20decision%20making%20circuit,state%2C%20that%20is%2C%20there%20is%20no%20feedback%20resistor.
Comparators
https://sound-au.com/articles/comparators.htm
Figure 5 - Window Comparator For Audio Overload Indication. The above shows a window comparator that will provide a high output if the input voltage goes above 2/3 Vs or below 1/3 Vs (Vs is the total supply voltage, 30V), and is similar to the arrangement used in the 555 timer. In this case, the 'overload' LED will come on if the signal voltage ...
Op Amp Comparator Circuit » Electronics Notes
https://www.electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/comparator.php
Circuits that compare two voltages and give a digital output dependent upon the comparison of the two voltages are often used within electronic circuit design. For a comparator circuit, a high gain amplifier is needed so that even small changes on the input result in the output level firmly switching. Operational amplifiers are used in many ...
Op-amp Comparator and the Op-amp Comparator Circuit
https://www.electronics-tutorials.ws/opamp/op-amp-comparator.html
With reference to the op-amp comparator circuit above, lets first assume that V IN is less than the DC voltage level at V REF, ( V IN < V REF ). As the non-inverting (positive) input of the comparator is less than the inverting (negative) input, the output will be LOW and at the negative supply voltage, -Vcc resulting in a negative saturation of the output.
LED Comparator Display - Audio Volume Level - …
https://www.instructables.com/LED-Comparator-Display-Audio-Volume-Level/
Comparator circuits are very handy when you need a visual representation of an adjusting voltage level. My most common application is a volume indicator on an audio source. The output can be shown through a few LED's and give the user a quick and easy to understand volume representation. When using the op amp, if you apply a voltage to the ...
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