Power Electronics

Simple Mobile Phone Battery Charger

The following diagram is a simple mobile phone battery charger circuit. The design is simple, easy to build and inexpensive.…

55 years ago

Simple Battery Level Indicator

Here the circuit diagram of simple and easy made battery level indicator. In general, in mobile phones, the battery levels…

55 years ago

Power Supply Failure Alarm

This is the 'special' circuit design of power supply failure alarm. The vast majority of the power supply failure alarm…

55 years ago

4-Output Stage (5V/6V/9V/12V) Stabilized DC Power Supply

This is definitely an effective 4-output stage stabilized DC power supply unit for testing electronic circuits. It delivers very well…

55 years ago

Automatic Switching-on Emergency Light

Automatic Switching-on Emergency Light The schematic diagram shown right here is the automatic switching-on emergency light circuit which is controlled…

55 years ago

Report: DC/AC Pure Sine Wave Inverter

Here the project report of DC/AC pure sine wave inverter. This report focuses on DC to AC electrical power inverters,…

55 years ago

Car Cigar Lighter to USB Power Socket

Here is the schematic design of car cigar lighter to USB power port. Nowadays, almost all computer systems have logic…

55 years ago

Mini UPS Project

Here the simple Mini UPS circuit diagram. This circuit can provide an uninterrupted power supply (UPS) to operate 12V, 9V…

55 years ago

Solar Powered Mobile Phone Battery Charger

This is the schematic diagram of solar powered mobile phone battery charger. The circuit is designed to charge the battery…

55 years ago

5V Regulated Power Supply with OverVoltage Protection

This is the circuit diagram of 5V Regulated Power Supply circuit, featured with over voltage protection. The circuit is based…

55 years ago