Transformateur 230V 12V - Class Design

OEM EI Series Class B Step Down 24V Transformer - China Lead Wire Type, EI Type

Schneider Telemecanique 230V / 400V Input to 24V Output 250VA Safety Transformer (ABL6TS25B)

What are this kind of big toroid used for/in ? : r/AskElectronics

Introduction to Current Transformers (CTs) : The Talema Group

12v 1A Class 2 Power Supply, LED Transformer Replacement, Outdoor Low Voltage Power Adapter, Plug for String, Rope Lights

How To Make 12v DC to 220v AC Converter/Inverter Circuit Design?

Reference Designs

So I learned about those capacitive droppers (230VAC->12V DC on this pic), although I understand they're dangerous since the whole circuit stays at mains potential to ground. Can you help me understand

12 Volt Plug Transformer

0 442 32 Legrand, Legrand 63VA DIN Rail Transformer, 230V ac, 400V ac Primary, 24V ac Secondary, 535-7727

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