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Is LM393 an op-amp?
The IC LM393 includes two op-amps internally and each op-amp has two inputs as well as one output. If the inverting terminal voltage is high than the non-inverting, then the op-amp output will befall to the ground, and the flow of current will be from positive supply to GND.
Is comparator a differential amplifier?
Unlike operational amplifiers that usually operate with the input voltages at the same level, comparators typically see large differential voltage swings at their inputs. If the inputs exceed a device’s specified common-mode range (even though within the specified signal range), the comparator may respond erroneously.
Can you use comparator as op-amp?
While operational amplifiers and comparators may look similar, they are very different and designed to be used in different applications as an op-amp may be used as a comparator, a voltage comparator can not be used as an op-amp due to its non-linear output stage.
How does LM358 op-amp work?
IC LM358– LM358 consists of two independent, high gain operational amplifiers in one package. It has large dc voltage gain of 100dB. This IC can be operated on wide range of power supply from 3V to 32V for single power supply or from ±1.5V to ±16V for dual power supply and it also support large output voltage swing.
How does an amplifier act as a comparator?
The comparator is an electronic decision making circuit that makes use of an operational amplifiers very high gain in its open-loop state, that is, there is no feedback resistor. In other words, the op-amp voltage comparator compares the magnitudes of two voltage inputs and determines which is the largest of the two.
How does the LM393 voltage comparator module work?
The LM393 IC contains 2 op-amps that are completely independent. In LM393 comparator module, only one of the op-amps is used and the other is not connected. The module compares input voltage with the desired voltage level, and produces a digital output.
Can a comparator be used as an operational amplifier?
Although any operational amplifier can be used as a voltage comparator, the LM393 comparator proves its advantage by providing an open collector output to make it suitable for driving loads. The output transistor can drive loads up to 50V and 50mA and is suitable for driving most TTL, MOS and RTL loads.
When does the LM393 output go high or low?
So when V+ > V-, the output goes high and when V- > V+ output goes low. Just like below, But for this LM393, it looks different. I have read some:
How to use a comparator in Electrical Engineering?
Use the inverting input for your reference. Usually a pair of resistors configured as a voltage divider will give you the reference voltage required. Use a comparitor for comparison. Use an op-amp for amplification. (But don’t use a 741.)