220V

How to Safely Connect an Oscilloscope to 220V AC

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How to Safely Connect an Oscilloscope to 220V AC

Recently, a colleague at the company asked me: “Can an oscilloscope be directly connected to the 220V voltage between the live wire and the neutral wire? Will it blow up?” Because it indeed exploded once before, it left a lingering fear~ I believe many of you have similar questions, so today I will summarize this … Read more

Analysis of a Low-Cost 220V to 5V Circuit

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Analysis of a Low-Cost 220V to 5V Circuit

Hello everyone, I am a beginner in electronics. Today we will analyze an AC 220V to DC 5V resistive-capacitive voltage reduction circuit. The resistive-capacitive voltage reduction is a circuit that can convert AC mains power to low DC voltage with very few components and at a very low cost. It is often used in devices … Read more