Maximum ratings

Sory haven't been paying attention

PSU's

Linear Power Supply

• simple, expensive, reliable, lower efficiency.

Switching Power Supply

• two stage, voltage is rectified and than converted back to AC but at higher freq, because it's easier and cheaper to make a transformer for higher freq
• more efficient
• easier to filter higher freq.j

DC/DC converter

Ferrite Bead

Decouple/bypass Capacitors