This is 5V portable power supply circuit for or PIC microcontroller power supply circuit. As The PIC16F627A microcontroller use 5 volts DC power supply.
This is 5 volts DC Regulator power supply that without the transformer so small size, use the MOSFET is based. It is suitable the digital circuit. Caution! This circuit requires very careful to create. Because there is a high voltages many areas. The diodes D1 to D4 are used to …
This is 12v to 5v voltage regulator circuit using IC-7805 and use power NPN transistor TIP41 to boost up current,it is small and cheap
This is 12V to 5V 3A circuit, step down DC regulator using IC-7805 to steady voltage and power PNP transistors to increase current up to 3A and protection.
This is usb motorcycle power supply circuit, for convert DC 12V to 5V 0.5A-1A of IC-7805 so easy IC-regulator,can use for mobile nokia and mp3 player