DC Power supply adjust voltage regulator 1.5 Volt - 15Volt 3Amp

I wants DC Power supply adjust voltage regulator 1.5 Volt - 15Volt, and give current about 3 Amp for in the work experiences all electronics. As seek many the circuit , meet that this circuit easily , use integrated number circuit LM1084 for control voltage model regulator adjustable voltage 1.5V - 15V. With fining decorates VR1. And should feedInput AC 18V 3A low like besides should hold let off the heat gives the integrated circuit LM1084 with. For the detail , see in the circuit.

http://www.circuitpowersupply.com/circuitblog/dc-power-supply-adjust-voltage-regulator-15-volt-15volt-3amp/

24V Variable DC Power Supply

A Variable DC Power Supply is one of the most useful tools on the electronics hobbyist’s workbench. This circuit is not an absolute novelty, but it is simple, reliable, “rugged” and short-proof, featuring variable voltage up to 24V and variable current limiting up to 2A.

Well suited to supply the circuits shown in this website. You can adapt it to your own requirements as explained in the notes below.
Link :

3-30V 2.5A Stabilized power supply

This is a very useful project for anyone working in electronics. It is a versatile power supply that will solve most of the supply problems arising in the everyday work of any electronics work shop. It covers a wide range of voltages being continuously variable from 30 V down to 3 V.

The output current is 2.5 A maximum, more than enough for most applications. The circuit is completely stabilised even at the extremes of its output range and is fully protected against short-circuits and overloading.
Link

10A Variable Regulator power supply with LM350

This be Variable Regulator power supply Circuit. That be High Current Source 10amp. By use the integrated circuit LM350. Which usual it controls Voltage output get 1.2V to 25V and give current about 3Amp.

But when bring parallel 3 pcs. Can give current output be 10Amp max for this circuit. It can adjustable voltage output get 4.5V to 25V at 10Amp. Other detail please see in the website Link.