I have been put forth with this question many times in this blog, how do we add a changeover selector switch for automatically toggling of an inverter when AC mains is present and vice versa. And also the system must enable automatic switching of the battery charger such that when AC mains is present the […]
Automatic
Simple 48V Automatic Battery Charger Circuit
The proposed 48 V automatic battery charger circuit will charge any 48 V battery up to an optimal 56 V full charge level, utilizing very ordinary components. The circuit is highly accurate with its over charge cut off features. Circuit Description: As shown in the circuit diagram, the main element in the circuit is the opamp IC 741, which has been arranged as a comparator. Pin#3 […]
5 Best 6V 4Ah Automatic Battery Charger Circuits Using Relay and MOSFET
The following 5 versions of 6 volt 4 AH battery charger circuits has been designed by me and posted here in response to the request from Mr. Raja, I have explained the whole conversation. Technical Specifications “Dear sir, please post a circuit to charge 6 volt 3.5 ah lead acid battery from 12 volt battery. […]
Automatic Inverter Output Voltage Correction Circuit
The common problem with many low cost inverters is their incapability of adjusting the output voltage with respect to the load conditions. With such inverters the output voltage tends to increase with lower loads and falls with increasing loads. The circuit ideas explained here can be added to any ordinary inverter for compensating and regulating […]
Cheap Semi Automatic, Tank Water Over Flow Controller Circuit
The circuit presented here monitors the level of the water rising inside a tank and automatically switches OFF the pump motor as soon as the water level reaches the brim of the tank. The proposed tank water overflow controller circuit is a semi automatic device because it can only sense an overfill and switch OFF […]
4 Automatic Day Night Switch Circuits Explained
The 4 simple light activated day night switch circuits explained here can all be used for controlling a load, normally a 220V lamp, in response to the varying levels of the surrounding ambient light. The circuit can be used as a commercial automatic street light control system, as a domestic porch light or corridor light […]