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.…
Simple Battery Level Indicator
Here the circuit diagram of simple and easy made battery level indicator. In general, in mobile phones, the battery levels…
Power Supply Failure Alarm
This is the 'special' circuit design of power supply failure alarm. The vast majority of the power supply failure alarm…
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…
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…
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,…
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…
Mini UPS Project
Here the simple Mini UPS circuit diagram. This circuit can provide an uninterrupted power supply (UPS) to operate 12V, 9V…
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…
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…