Circuit Project Electronic

Source :: http://www.zen22142.zen.co.uk/Circuits/Power/boosti.htm
IC 78xx series of voltage regulators are available with different current outputs, you can boost
the available current output with this circuit. A power transistor is used to supply extra current to the load
the regulator, maintaining a constant voltage. Currents up to 650mA will flow through the regulator, above
this value and the power [...]

This is circuit dc regulator power supply 5V at current 5A, I used it for my digital production. The mian part electronics is IC 7805 and Mj2955 tansistor.
You must use the the 9VAC 5A transformer.
Click here to Read more ,view circuit and PCB
7805+Mj2955 power supply 5V 5A for digital circuit
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Regulator Booster by transistor
This circuit can help enlarge current of power supply circuit that use Ic regulator well.
Q1 is BFX88 or Equivalent
Q2 is BD132 or Equivalent
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