although this approach is typically limited to less than about 4 A power supply. There are a few options for implementing Class 2 power sources. Small transformers can be designed to convert 120 VAC ...

Using the reactance of a capacitor, that’s C = 1 / (2 * pi * 60 Hz * 4400 ... (But don’t mention Muphry.) A transformer-based power supply is going to be marginally more expensive and ...

Various models of Signal Transformer’s ST series and DST Series of high isolation split bobbin low power transformers are recognised by UL as Inherently Limited Class 2 transformers per (UL 5085-3) ...

But for circuits where weight, volume, or cost are a major concern, a transformer may be omitted in the circuit design in favor of some sort of transformerless power supply. While power supplies ...