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What is an isolation transformer, what is it for, how it works and how to use it correctly, you will learn about this from this. Sources: GOST 30030-93 (IEC 742-83) GOST 12.1.030-81 https://www.hantek.com/uploadpic/hant... Why a grounded oscilloscope causes a short circuit: • EEVblog #279 - How NOT To Blow Up You...