Safety In The Electronics Lab

Protecting you, not the parts — the life-safety fundamentals of the bench: electrical shock and mains voltage, chemical and thermal hazards, lithium battery dangers, and fire safety and emergency procedures. Every section is safety-critical.

• 3.1Electrical Safety FundamentalsProtecting you, not the parts — it is current through the body that harms, mains voltage and wet skin drive it, and charged capacitors stay lethal even unplugged, so the safe default is to de-energize, discharge, verify dead, and know what's live before you touch it.BeginnerHigh Risk27 min read
• 3.2Mains Voltage — Understanding the RiskThe deadliest thing on the bench, up close — what mains is, the live/neutral/earth conductors and why neutral isn't trustworthy, where the isolation barrier separates the lethal primary from the safe secondary, and the non-isolated-supply trap where a low-voltage rail can sit at full mains potential.BeginnerHigh Risk27 min read
• 3.3Chemical Safety — Flux, Solvents, and IPAThe bench chemicals you use every day — flux and its respiratory-sensitizing fumes (the soldering smoke is flux, not lead vapor), highly flammable isopropyl alcohol next to a hot iron, and the solvents whose labels you must actually read; controlled with ventilation, keeping flammables from heat, and protecting your skin and eyes.BeginnerMedium Risk25 min read
• 3.4Thermal Hazards — Soldering Iron and Hot Air SafetyThe bench runs hot — a soldering iron tip around 350 degrees Celsius that never changes color, an invisible hot-air stream, molten solder that can spit, and heat that ignites the very solvents of the last section; respected with a stand used every time, eye protection, flammables kept clear, and letting things cool before you touch them.BeginnerMedium Risk25 min read
• 3.5Battery Safety — Lithium Puncture, Swelling, and FireThe most dangerous component you'll handle in repair — a lithium cell stores intense energy and a flammable electrolyte, and puncturing, crushing, shorting, or overheating one can trigger thermal runaway: fire and toxic venting; never pierce a cell, never use a swollen one, disconnect it first, and dispose of it properly.BeginnerHigh Risk26 min read
• 3.6Fire Safety and Emergency ProceduresThe chapter's fire threads pulled together — flammable solvents, an always-hot iron, and lithium cells all share your bench; know the right extinguisher (never water on electrical or liquid fires), when to fight versus flee, and how to prevent, respond to, and escape a fire, because your life comes before the workshop.BeginnerMedium Risk26 min read
• Chapter Quiz48questions · 80% required to continue