Computer Tricks & Tips

 Power Booster

• Nowadays We always connect our external peripherals to PC by USB port. 
• Every device requires a specific amount of power for its proper working. 
• Since a PC SMPS can supply only a limited power to the connected devices. 
• When too many power devices are connected to USB simultaneously, there will be occur a power shortage. 
• The circuit shown in the figure is designed for type A USB socket. 
• The circuit uses an  MOC3021 which is an opto-diac which triggers BT136 - TRIAC1 resulting a power availability through transformer. 
• IC 7805 is a 5v voltage regulator which regulates the output from the bridge rectifier to give constant power supply to USB ports.

                                                      
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