Their benefits are such that it’s become surprisingly rare to see a traditional linear power supply with a mains-frequency transformer and rectifier circuit, so [ElectroBoy]’s dual voltage PSU ...

And when you work with one, you have to know that any part of the circuit can be at mains voltage. Now read on to see why! A transformerless power supply (TPS) is basically just a voltage divider ...

Space Savings. Integrating the circuit breaker into the power supply and employing front-facing connection technology reduces ...

Power supplies known as "switching" power supplies are commonly used. Their name is derived from the type of circuit used to change the voltage. For more details, see transformer. See power adapter.

These could be batteries, solar panels, or a power supply connected to the mains - anything that can provide power to our circuit. A wire from the cell can then be connected to a component like a ...