High Performance Portable DC Bench Power Supply: Save Money and Free Up Bench Real Estate by Building Your Own

March 02, 2015 // By Keith Szolusha, Linear Technology
Save money and free up benchtop space by building your own high quality bench power supply. The key component to this supply is the LT3081 linear regulator surrounded by a short list of easy-to-get components. The LT3081's unique current-source reference and voltage-follower output amplifier make it possible to connect two linear regulators in parallel for up to 3A and over 24V of adjustable current and voltage output control. Linear regulators at the output suppress output ripple without requir- ing large output capacitors, resulting in a truly flat DC output and small size.