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Opamp Battery Charger Circuit with Auto Cut Off

The post discusses a two opamp IC 741 and LM358 based auto cut off battery charger circuits which are not only accurate with its features but also allows a hassle free and quick setting up of its high/low cut-off threshold limits. The idea was requested by Mr. Mamdouh. Circuit Objectives and Requirements As soon as … Read moreOpamp Battery Charger Circuit with Auto Cut Off

Flashing LED Battery Low Indicator Circuit

The post explains a simple low/normal battery voltage status indicator circuit through a flashing and a constant LED, where the flashing LED indicates a normal status while the solid indicator warns against a low battery condition. The idea was requested by Mr.Alf. Technical Specifications Hi, I found and built your “Low Battery Indicator Circuit Using … Read moreFlashing LED Battery Low Indicator Circuit

48V Solar Battery Charger Circuit with High/Low Cut-off

The post discusses a 48V solar battery charger circuit with high, low cut-off feature. The thresholds are adjustable through individual presets. The idea was requested by Mr. Deepak. Technical Specifications Hi Swagatam, Thank you for UPS relay circuit. I am trying to build it very soon. I will update you the result once i am … Read more48V Solar Battery Charger Circuit with High/Low Cut-off

Cellphone Low Battery Cut-off with Indicator Circuit

The post explains a simple yet effective low battery cut-off with indicator circuit which can be integrated with cell phone/tablet charger battery packs in order to monitor and avoid battery draining below a set threshold. The idea was requested by Mr. David. Technical Specifications Hi Swagatam. I know it was asked before, but still, if … Read moreCellphone Low Battery Cut-off with Indicator Circuit

Motorcycle Low Battery Over Discharge Protector Circuit

A simple motorcycle battery over discharge protector circuit is explained in the following post. The circuit will prevent the battery from over-discharging by the motorcycle headlamp whenever the mo-bike alternator is not enabled or is idling in the neutral mode in which case the battery is normally subjected to excess loads via the headlamp bulb. … Read moreMotorcycle Low Battery Over Discharge Protector Circuit

Selectable 4 Step Low Voltage Battery Cut off Circuit

The post explains a circuit configuration which facilitates a multi-step low voltage selection and cut-off for the battery being used and monitored. The circuit was proposed by Mr. Pete. Technical Specifications Dear Swagatam,Your assistance during the past few days has been incredible, thanks to which I think I have managed to get close to this 4 step … Read moreSelectable 4 Step Low Voltage Battery Cut off Circuit

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