General Safety in the Electronics Classroom
Learn core safety procedures, identify proper fire extinguishers, understand electrical shock mechanisms, and safely handle lab equipment.
List and follow general safety rules for the electronics classroom
Identify appropriate fire extinguishers for electrical fires
Describe the hazards of electrical injuries
Demonstrate proper measurement techniques to avoid circuit faults
Explain why safety rules exist and how to enforce them with peers
The electronics classroom contains equipment, tools, and materials that can cause injury if not handled properly. Your safety — and the safety of your classmates — depends on following these rules consistently.
Follow Procedures
📋Read procedures before starting. Never skip steps. Ask if unsure.
Read Manuals
📖Equipment manuals contain safety info. If you don't know how to use something, ask first.
Never Bypass Safety Devices
🛡️Don't remove or bypass fuses, guards, or safety interlocks. They protect you.
Avoid Wet Areas
💧Water conducts electricity. Keep drinks away. Dry hands before touching equipment.
Remove Jewelry
💍Metal rings, watches, bracelets can conduct electricity. Tie back long hair.
Assume Circuits Are ON
⚡Verify with a meter. Capacitors store dangerous charges even when disconnected.
Electrical equipment can overheat and cause fires if used improperly. Some electronic components and materials contain toxic chemicals like lead.
Classroom Match: Fire Extinguishers
Click a fire class on the left, then click its corresponding fuel source on the right. Correct matches lock in place.
Match Observations to Explanations
Click an observation on the left, then click its matching explanation on the right. Correct matches lock in place. Click an unmatched observation to unpair it.
Observation
Explanation
Common Chemical Hazards
Solder
Toxic (Lead)Wash hands after handling; do not eat/drink at workstation.
Flux
Irritant FumesWork in ventilated area; avoid breathing fumes directly.
Battery Acid
CorrosiveHandle leaking batteries with care; neutralize with baking soda.
Electricity can cause serious injury or death. The severity of an electrical injury depends on current, path through the body, duration, and frequency.
⚡ Current-Danger Simulator
Adjust the slider to see how current affects the human body, or use the skin resistance calculator below to see how conditions change danger levels.
Threshold of perception. A slight tingling sensation is felt.
Ohm's Law: I = V / R
See how skin condition and voltage combine to determine the actual current passing through the body.
Below threshold of perception. No sensation.
Develop safe work habits and always double-check before touching any circuit. Safety rules exist to prevent accidents before they happen.
Double-Check Checklist
Always turn off and disconnect power sources before modifying wiring.
Use a DMM voltmeter to verify that the circuit is fully de-energized.
Verify that large electrolytic capacitors are fully discharged before handling.
If you see a classmate violating safety rules, remind them. You are responsible for each other's safety.