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66 views

Is it good engineering practice to share two different 24 VDC SMPS's neutral wires?

Is it good engineering practice to share two different 24 VDC SMPS's neutral wires? I work in manufacturing with Toshiba extrusion machines which are controlled by PLCs. Our management wants to add a ...
Paul's user avatar
  • 19
1 vote
1 answer
66 views

Is it correct to connect the grounds of high-power and low-power switched-mode DC supplies?

I want to control some WS2811 lights with a Raspberry Pi. The lights need 24V ~180W ~8A from a supply such as this, whereas the Pi wants 5V and presumably low power from a supply such as USB. I ...
spraff's user avatar
  • 273
3 votes
3 answers
3k views

What does it mean when my car inverter's labeling says "Neutral Floating"? Is it safe to use?

I recently came across a fairly old car inverter. It plugs into a 12v DC lighter socket, and outputs 115 Vac at 60 Hz, and has a normal American outlet on the side of it (with a ground pin, which ...
john01dav's user avatar
  • 180
0 votes
0 answers
41 views

Can I swap active/neutral on an isolated 240V power supply? [duplicate]

I'm looking at using a Meanwell IRM-03 isolated switchmode power supply (datasheet) in a project but the active/neutral pins are arranged in an inconvenient way for the PCB tracks. It would be a heap ...
peter_mcc's user avatar
  • 191
0 votes
1 answer
776 views

High neutral-to-ground voltage of switching mode power supplies

I am attempting to create a sine wave signal from 0V to 12V at 40 Hz and up to 1.4A, with original power input 120VAC 60 Hz wall power. I've come up with the circuit below, which I'm pretty sure ...
BrianB's user avatar
  • 3