![]() ![]() GND is where the ground wire of the voltage source gets connected to. This supply voltage can be as high as 36V. V CC is where the positive terminal of the voltage supply gets inserted into. Is greater or smaller than a certain threshold.īefore we actually build our comparator circuit, we will go over the pinout of an LM393 comparator IC, so that you know what each pin is Thus, a comparator is very useful in circuits where we measure levels and want our circuit to act a certain way based on whether the level of an input Based on this, electronic decisions can be made based on which input is greaterĪnd which is smaller. It compares these voltage inputs and determines which is the larger value. The LM393 is a dual differential comparator this means that it accepts 2 inputs for comparison. Tayda Electronics- LM393 Voltage Comparator. This voltage comparator IC can be obtained at tayda electronics at To determine if its voltage is above or below this level. Once we feed the voltage comparator a certain voltage reference level, we can then connect the battery One of the main components we will use for this circuit is the LM393 voltage comparator chip.Ī voltage comparator will allow us to determine the voltage level which a battery contains. So this circuit tests voltage levels based on the use of a voltage comparator. That the battery most likely is used and depleted. If the voltage is below this level, then we know If the battery's voltage is above this level, then we know that the battery is good. So if we want to test a AA battery, which is a battery which contains 1.5V (or a little above) when brand new, we can ![]() And we can adjust this reference voltage level to any voltage we want. Therefore, with a voltage comparator, we can check whether the voltage from a battery is above a certain reference voltage level A voltage comparator is a chip which can differentiate whether voltage is above aĬertain reference level or below a certain reference level. How we will build this circuit is mainly through the use of a voltage comparator IC. ![]() It would just require adjustment of the voltage. We can adjust the circuit so that any type of battery can be tested with this circuit. Outputting is above or below a certain level. Now we will build a circuit which can show whether the voltage that a battery is To go about checking the level of a battery to see whether it is still good or not. But if you do not have one, there are other ways With a voltmeter,Ĭhecking a battery would be a very simple process. This is a method which can work if you do not have a voltmeter. In this project, we will go over how to build a battery tester, ![]()
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