Adjustable voltage and current power supply

Adjustable voltage and current power supply circuit and free PCB layout. the adjustable power supply is most important for who are working in the field of electronics and electrical. all the time you can not depend on the voltage regulator ic for testing the electronic equipment’s.

here I am providing two types of PCB for this circuit because of the LM2596 is available in two types of plastic packages of TO-220 and TO 236. so you can download the PCB which one you want. provide the 30v dc into the input section of the circuit. the coil used in the circuit is 33uh. The cost of this ic is near to 60 rupees in the Indian market.

The demerits of these kinds of voltage regulator will provide only the fixed voltage with 1 Ampere output. (7805- 5 volt, 7806- 6 volt, 7808- 8 volt output ) .

in this condition we need a circuit, it can provide a maximum voltage of 30v with 3-4 ampere current. so I developed a circuit. The circuit is working based on the ic of LM2596

Adjustable voltage and current circuit diagram

LM2596 ic featurs

• The Lm2596 is a regulator ic are a monolithic integrated circuit.
• which provide the function of the buck converter.
• capable of driving 3A load with excellent load and regulation feature.
• fixed output voltage 3.3v to 30v
• the minimum number of components required.
• operating switching frequency of 150khz.
• available in To 220 and To 263 packages.
• High efficient.
• Simple circuit.
• Require minimum space.
• 5 pin configuration.
• feedback mechanism.