LED power supplies

This simple and inexpensive unit will help test various devices; with it, one can determine the power factor of the AC grid draw, power-on and power-off times, etc.

We teardown and tested in different modes RSP-320-24 power supply from Mean Well. It's a 24-volt power supply with a maximum current of 13.4 amps. The supported mains voltage is from 88 to 264 volts without an additional switch.

What characteristics are important? What do the characteristics mean? How to measure parameters cheaply?

We teardown and tested in different modes LRS-150-24 power supply from Mean Well. It's a 150W single-output enclosed-type power supply with a 1 3/16" low-profile design. Adopting the input of 115VAC, the power supply provides an output voltage line of 24V DC.

Teardown/test of a power supply from a well-known manufacturer. Manufacturing quality, circuitry, output voltage quality, waveforms.

A teardown / review of a well-known power supply with wireless control. Manufacturing quality, circuitry, output voltage quality, waveforms.