As the name implies, high current power supplies can deliver large amounts of current to a load. High current power supplies can be of two basic types: high current linear power supplies, and high current switch mode power supplies.

High current linear power supplies consist of an input transformer, full wave rectifier bridge, and dissipative regulator circuit. They have very low ripple, very good regulation, and no switching frequency that can cause unwanted EMI. 

High current linear power supplies are larger and heavier than switching power supplies and are less efficient.High current switch mode power supplies, sometimes referred to as SMPS power supplies, switchers, or switched mode power supplies, regulate the output voltage using a complex high frequency switching technique that employs pulse width modulation and feedback. 

Acopian switching regulated power supplies also employ extensive EMI filtering and shielding to attenuate both common and differential mode noise conducted to the line and load. 

Galvanic isolation is standard in our switchers, affording our users input to output and output to ground isolation for maximum versatility.

Acopian high current switching regulated power supplies are highly efficient, small and lightweight, and are available in both AC-DC single and wide-adjust output and DC-DC configurations.

LM317 is a three terminal voltage regulator IC from National Semiconductors. The IC is capable of delivering up to 1A of output current. Input voltage can be up to 40V and Output Continue Reading…..

High Current Dc Power Supply Circuit Diagram

high current dc power supply circuit diagram

Parts List For High Current Dc Power Supply Circuit Diagram

  • Voltage Regulator LM317
  • Transistor: 2n3055
  • Capacitor: 1000uf/50volt, .1uf to 10uf/50volt
  • Resistor: 5k Variable Control

Important Tip.:-

This is a high ampere DC power supply circuit. By increasing the transistor you can increase the power supply current. Use heatsink with transistor. If you need more current use more transistor in parallel.

How To make High Ampere Dc Power Supply Circuit Watch The Video

High Ampere Constant Voltage Power Supply With 7805-7809-7812...

With the help of this circuit you can make high ampere constant voltage Power supply like 5amp-10amp-20amp-50amp….. and so on. 7812 high current voltage regulator circuit can increase the load current capacity by adding a transistor. 78XX Three-terminal regulator manual contains positive regulators using NPN transistors, otherwise negative regulators (79xx) use PNP transistors. The following is an example of a 12V DC voltage regulator circuit using IC 7812, which aims to increase the load current of 1A IC 7812 to a higher level (10A). The outermost transistor uses the highest load current.

High Ampere Current Booster circuit with voltage regulator 7812 or 7805

By adding three complementary MJ2955 transistors, the simple voltage regulator circuit below has a rated load current of up to 10 A. The charging current capacity can be changed by increasing or decreasing the number of MJE2955. A resistance of 4.7 To 10 Ohm can be used to prevent current flooding and stabilize the input voltage of IC 7812.

Since the no-load current capacity of 7812 is greater than 1 A, it is necessary to provide 1 A of output current as a safety fuse on the IC and prevent high current transients. On the IC 7812 and MJ2955 transistors, a heat sink should be installed so that the load current generates enough heat, For the 7912 negative regulator you need to replace the MJE2955 transistor with another model, such as MJE3055, 2N3055 or TIP3055. Hope this brief description helps increase the load current of the 7812 regulator circuit

Watch Video For More Details

PCB Layout for High ampere Voltage Regulator

You can print save and print this page on Simple A4 paper and make your own PCB at Vero Board(PCB) watch video for details or you can download gerber file from link below

PCB Layout For high ampere supply

High Ampere Variable Power Supply 2nd Circuit

You can also use this circuit this is very easy circuit with PCB Layout. This circuit is safe because we are using 2 fuse in this circuit. Use 1 ampere fuse at the output of LM317 and use 2nd one at the output ( use  fuse 2 according to Output Load).

high ampere adjustable power supply circuit with lm317

Parts List

  1. Voltage Regulator U1 LM317
  2. Transistor Q1,Q2,Q3- TIP2955/2N2955 2pc for 10amp or you can use more transistor in parallel for high load use MJE2955 3pc for 10amp
  3. Resistor R1,R2,R3 .1 ohm or .22 Ohm 5Watt each
  4. R4 4.7 Ohm  1Watt, R5 220 Ohm 1/4watt
  5.  VR 5k or 10K potentiometer
  6. Capacitors C1 2200uf/50v, C2 & C4 .1uf(104PF), C3 10uf/50v
  7. Fuse1 1Amp, Fuse2 20Amp
  8. Terminal Block 2Pin CN1 & CN2 
  9.  Use Heatsink With Transistor
  10. You can also Use 12Volt Computer Fan With this circuit if you want to use this 24*7

Pinout For Transistors and LM317

transistor tip2955, mje2955, 2n2955, Voltage regulator LM317 pinout

PCB Layout

You can print save and print this page on Simple A4 paper and make your own PCB at Vero Board(PCB) watch video for details or you can download gerber file from link below

high ampere variable power supply circuit with pcb layout