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Increase current for IC regulator Circuit

admin — Sun, 03 Jul 2011 11:48:58 +0000

Increase current for IC regulator circuit

Although the 78xx series of voltage regulators with different power outputs, you can compare the power generation by stimulating this circuitry. A power transistor is used to provide additional power to the load of the regulator, maintaining a constant voltage.

Currents up to 650mA is flowing through the regulator, begins above this value and the power transistor to run, which provides additional power to the load. This must be a sufficient heat sink, because it is probably pretty hot.

Suppose you use a 12V regulator, 7812th Input must be a few volts higher to allow for voltage drops. Take 20 volts. Let us also assume that the load to draw 5A.

The power dissipation in the transistor Vce * Ic or (20-12) * 8 = 40 Watt.

There you stay warm in the winter, but you will have a large heatsink with good thermal dissipation needs do. Do you want the output current with a negative regulator, such as increasing the 79xx series, then the circuit is similar, but a kind of power NPN transistor is used instead

10A Regulator Power Supply with IC78XX

admin — Sun, 31 Jan 2010 14:45:04 +0000

10A power supply

If you don’t know ,”How to build regulator circuit ” for your project or equipment, I think this simply circuit will be to apply in your project .

I leads the old equipment to come and give a very generous and say I pray for DC power supply circuit 10A.

What a simple please, when I saw the equipment they already have. Then take this route, please use the 78xx chips such as IC 7805 =output 5 Vdc.

IC 7809 =output 9 Vdc.

IC 7810 =output 10Vdc.

IC 7812=output 12 Vdc.

Many have the number and strength M15004 number of transistors that can increase the flow. Obtaining high range 10A.The important aspect Transfermer that you need about the current 10A. And using C-format 10000UF with Filter.

Power supply with IC regulator 7805,7806,7809,7810,7812

admin — Fri, 19 Jun 2009 05:02:41 +0000

Of all the voltage regulator ICs, the 78xx family is by far the most established. Not surprisingly! It’s difficult to get performance this good with so few outside components necessary.

power supply with 7805,7806,7809,7810,7812 at 5A circuit

Just like the famous LM317, the 78xx family incorporates automatic shutdown in case of overheating. You can get up to 1.5A of current with a suitable heat sink. No fuse is required.

Problems:

Observe all the safety precautions when dealing with mains powered circuits.

Possible uses:

A regulated power supply for any application.