To create a "proper piece" for the updated in Proteus, you need to ensure both the schematic symbol and the PCB footprint are correctly linked. Since Proteus often lacks a built-in simulation model for this specific component, the "piece" you create is typically a graphical symbol with a mapped footprint for layout purposes. 1. Integrating the Library Files

To build this circuit in Proteus, gather the following components from the device library: (From your updated library) MINRES / RES (Resistors for the feedback network) CAP / CAP-ELEC (Input and output filtering capacitors) 1N5822 or MBR340 (Schottky barrier diode) INDUCTOR (Power inductor, typically DC VOLTAGE SOURCE / BATTERY (Input voltage) Circuit Schematic Layout

(If not there, check: C:\Users\YourName\Documents\Proteus 8 Professional\LIBRARY )

: Ensure your virtual inductor internal series resistance (ISR) is not set too high in the component properties panel. To help refine your simulation setup, let me know: Which version of Proteus are you currently running?