[ Condensers; Connections, electric; Couplings, electric; Current rectifiers; Electric relays; Electricity conduits; Electromagnetic coils; Integrated circuits; Polarimeters; Printed circuit boards (PCBs); ] Resistances, electric [ ; Step-up transformers; Triodes; Variometers; Voltage stabilizing power supply; Electric connectors; Electric control panels; Electric sockets; Electrical arc detection and suppressing device used in low voltage switchgear; Electrical plugs and sockets; Lighting co...