120W DC Linear Power Supply with Selectable Output Voltage from 5V to 24V

The SPD-120PRO core solution was developed to meet the needs of high-definition audio and video equipment, featuring low ripple, high speed, and low internal resistance. It offers multiple voltage options, including 5V, 9V, 12V, 15V, 19V, and 24V. The circuit architecture consists of a precision voltage reference, an OPA1611 high-speed operational amplifier, and a UV-grade noise-reducing DC regulator circuit with high-power transistors. Additionally, the circuit incorporates a CLC high-current audiophile-grade filtering i and the EMI isolation stage further enhances the quality of the DC power supply!