Power Supply Circuits

If our device need right DC power to work safe then this Simple DC High Low Voltage Cut Off Circuit work like a guard. If battery is too low then circuit stop power to save our device. If battery is too high then also circuit stops power to protect. This circuit keep device safe from […]

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. To stay safe we can use a step-down transformer. It makes voltage lower and safer. It also has safety parts to stop electric shocks. Circuit […]

Simple Low Power Ozone Generator Circuit use less power. It make ozone gas from air. It uses electric spark to change oxygen to ozone. Ozone help clean air and water and also kills the germs. But too much ozone is also not safe, it can be bad. Circuit Working: Parts List: Category Item Quantity Capacitors […]

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. To connect safe we have used one transistor like translator and one optocoupler […]

This Adjustable Power Supply Circuit using IC TDA2030 can change the voltage it uses small trick which is little bit surprising. 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. We can change output which is good for […]

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. This circuit work like translator, it take big AC power from wall and change it to smooth DC power so […]