Topic

isolation

3 videos. Ranked by independent recommendations, not by views.

1. 

   1 EEVblog #388 - Fake Apple USB Charger Teardown

   EEVblog 15 people · 17 months · since Apr 2013

   Dave Jones tears down a counterfeit Apple USB charger and shows its poor mains isolation; cited in discussions of cheap chargers and the shock risk they carry.

2. 

   2 Using Optocouplers with the Raspberry Pi

   Gaven MacDonald 8 people · 7 months · since Sept 2013

   Explains how an optocoupler isolates a Raspberry Pi from motors, pumps and other noisy loads; answerers recommend it as a clear account of how the part works.

3. 

   3 Inside some dodgy Chinese USB power supplies from Greece.

   bigclivedotcom 3 people · 3 months · since Feb 2017

   Big Clive examines some USB power supplies and finds poor isolation, used to show how a mains charger can fall short on safety.