Think of a battery like water tank for our device. This Simple Circuit to keep a Battery Topped Up is like a helper, which checks battery level and gives charge when battery gets low. Also, battery stays full and is ready always which is good for backup power, solar lights and for wireless toys. Circuit […]
Power Supply Circuits
Automatic Battery Charger with Trickle Charger Circuit
What if charger is smart? and if it fills battery by itself and keeps it full, but not too much. That is what Automatic Battery Charger with Trickle Charger Circuit does; it has part that checks battery power and if battery is low it sends power to fill. When it is full it gives little […]
How to Generate a Safe 220V AC Supply
If anyone’s project needs How to Generate a Safe 220V AC Supply from home power, then this is the circuit but we need to be careful. This voltage is dangerous and to stay safe we can use a step-down transformer, as it makes voltage lower and safer and it also has safety parts to stop […]
How to Interface Microcontroller and Arduino with Relay
In this article How to Interface Microcontroller and Arduino with Relay first we need to think about small computer like Arduino which cannot control big current. Relay is like one switch and it can handle big current for motor, light and heater and to connect safe we have used one transistor like translator and one […]
Adjustable Power Supply Circuit using IC TDA2030
This Adjustable Power Supply Circuit using IC TDA2030 can change the voltage it uses small trick which is little bit surprising; because the chip TDA2030 is normally for making speaker sound loud and can also work like voltage controller. With smart circuit design it gives steady DC voltage and we can change output which is […]
220V AC to DC Voltage Converter Circuit
This 220V AC to DC Voltage Converter is small circuit like small adapter for our devices. Wall socket gives AC power but many electronics like phone, laptop, LED light they need DC power to work; hence, this circuit work like translator, it take big AC power from wall and change it to smooth DC power […]