A very simple split power supply circuit project can be designed using this schematic diagram which is based on a LM380 audio power IC . The regulation of the output voltage depends of the upon circuit feeding the LM380 . The power dissipation is around 1 watt so an small heatsink may be required . If the power dissipation is exceeded , the device will go into thermal shut-down protection .
A very simple 5 volt switching power supply electronic circuit project can be designed using FAN302HL highly integrated PWM controller integrated circuit, that provides several features to enhance the performance of general flyback converters.
Using MAX630 step up regulator can be designed a very simple high efficiency 3 to 5 volt converter electronic project .
This step up converter based on the MAX630 step up regulator will provide a 5V output at 40mA output current.
When IC (pin 6) is driven low, the output voltage will be the battery voltage minus the drop across diode D1.