This is 5V portable power supply circuit for or PIC microcontroller power supply circuit. As The PIC16F627A microcontroller use 5 volts DC power supply.
his be Super Bridge 120W Power Amplifier by IC TDA2030 for you like the circuit amplifies that use the integrated circuit. and Transistor BD249 or TIP31
This is high power Mosfet amplifier,300W - 1200watt at load 4-8 ohms , For use in applications such as concert, theater, festivals, most suitable.
This is AC variable power supply circuit that apply output of 0-30V at 3A by use electronic components, bridge diode,and more, to control voltage
This is the high quality power supply 3A adjustable voltage regulator circuit. adjust voltage in steps 3V, 6V, 9V, 12V. adjust continuous 1.25V to 20V