Low battery indicator circuit diagram8/15/2023 Upgrading the above Transistorized Low Battery circuit into a Low Battery Cut-off Circuit Thus the present circuit becomes more efficient especially in cases where stand by current consumption tend to become an issue, example suppose in units which depend on low current battery supplies such as a 9V PP3 battery. The main advantage of the proposed two transistor low battery indicator circuit is its very low current consumption compared to the IC counterparts which consume relatively higher currents.Ī IC 555 would consume around 5mA, a IC741 around 3 mA, while the present circuit would just consume around 1.5mA current. However the following post relates yet another similar circuit which is much cheaper and employs just a couple of NPN transistors for producing the required low battery indications. We have so far seen how to make a low battery indicator circuits using a 741 IC and a 555 IC, which are no doubt outstanding with their abilities of detecting and indicating low battery voltage thresholds. The main feature of this circuit is its very low stand by current consumption. The following post describes a simple low battery indicator circuit by using just two inexpensive NPN transistors.
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