J
John Fields
- Jan 1, 1970
- 0
Sometimes I see on schematics L and N. I dont know that this is. Sometimes I
see it in relation to pic schematics. I dont use pic and dont really know
anything about it accept that it is a series of programmable chips often for
hobbyists.
Here is an example
http://eu.st.com/stonline/books/pdf/docs/10130.pdf
I have no intention of building this but just show it here as an one
example.
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From the .pdf,
"Wires are soldered from the base of the socket to line (L) and
neutral (N) on the PCB."
In the US, common 120V mains are obtained from one of the ends and the
neutral of a center-tapped 240V secondary of a transformer. 'L'
(line) refers to either of the ends of the transformer, and 'N'
(neutral) refers to the center tap.
Sometimes the separate ends of the transformer are referred to as 'L1'
and 'L2' in order to differentiate between them since they're 180° out
of phase with each other with respect to the center tap.