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Topic: Using 120V AC through a Breadboard (good or terrible idea?) (Read 1 time) previous topic - next topic

paulwece

Thanks,

But what is it about a phone charger that provides "physical & electrical separation" though? Ultimately power from 120VAC still gets transformed into 5VDC inside the phone charger so one can still consider the charger as part of an larger "overall" circuit. Just curious.

lastchancename

#46
Mar 30, 2019, 02:14 pm Last Edit: Mar 30, 2019, 02:15 pm by lastchancename
In an approved transformer/plug pack/adapter, the separate windings of the transformer provide electrical isolation, the plastic case and it's design create physical protection, the low voltage output is obvious (in conjunction with the physical & electrical isolation)
Proper grounding may also be needed if the reference or earth potential is required  in your project.
Experienced responders have a nose for laziness, (they were beginners once)... Sure, there are trolls, chest-beaters, and pretenders - but the help you'll get here is about as good as it gets - if you try to help youself!.

Paul__B

the separate windings of the transformer provide electrical isolation
Specifically, there is the requirement that there be two separate and distinct layers of insulation between the primary winding and the secondary winding - in every direction - thus double-insulated".

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