Conducted EMC Pre-Compliance with Tekbox DC LISN and Rigol DSA815. Fake LM2596S Exposed. 

A Rigol DSA815 spectrum analyzer in conjunction with a Tekbox DC LISN is used to examine line conducted emissions. An eBay purchased LM2596 circuit board is used as the noise source and different types of capacitors/filters are used to reduce emissions. Along the way a fake LM2596S Simple Switcher is discovered. The design and schematic of a CISPR 25 LISN is discussed.
Items used in this video can be purchased from Amazon. All items in this video were personally purchased. As an Amazon Associate I earn from qualifying purchases.
Tekbox LISN: amzn.to/47T4JuH
Tekbox Limter: www.tekbox.com...
Rigol DP832 Power Supply: amzn.to/3YSqoii
Rigol DL3021A Electronic Load: amzn.to/45rnaVE
Rigol DSA815-TG Spectrum Analyzer: amzn.to/45nYD3C