sinking and sourcing

What is sourcing and sinking? In electric hook up of , say, a magnetic sensing switch. The directions only say hook up sourcing. Nothing else, no voltage... nothing. Please help.

Reply to
Techrat
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a magnetic

Nothing else, no

instructions written by a moron for some bird brained outfit... it probably means hook up between their terminal called 'source'...and their their terminal named 'sink'

which in sensible language means the positive or negative poll or Line and Neutral on their terminal strip...voltage if its a security system will be low, 12vac or 12vdc probably, and supplied by their gizmo.... an issue they figure you dont need to know, its just a magmetic switch, DC no doubt thats why they have marked the poles..so its probably 12 vdc. or even 6vdc..check the battery that came with their unit. if it has a battery its dc.

Phil Scott

Reply to
Phil Scott

"Techrat" wrote in news: snipped-for-privacy@suscom.com:

This subject gets complicated because it is applied to both output devices, such as your magnetic sensor and whatever load or input device the switch is connected to. Sinking and sourcing is also used for both DC and AC circuits. To keep it simple we'll assume a two terminal switch and a two terminal load like a light bulb. In a source circuit your switch has one terminal connected to either positive DC OR AC Hot and the other terminal conneted to the load. The other of terminal of the load is connected to DC - or AC Neutral. When the switch turns on DC + or AC Hot is connected to the load. This is the same way the switches are wired in your house in America. In a sink circuit the position of the switch and load are reversed. One terminal of the load is wired to DC + or AC Hot and the other is wired to the sink switch. When the sink switch turns on it connects the load to either DC- or AC Neutral. This is the way most wiring is done in Europe. To make things even more confusing in a lot of newer documentation a sink switch is called simply NPN and a source switch PNP.

Reply to
bob hoffman

Thank you, everyone who replied. I was at a dead end for a wile. The dealer did not give any schematic or information as to voltage, amperage or any thing else. It turned out the magnetic switch was for 120vac. It only turned on one light. I just love manufacturers who do not include a somatic. Thanks.

Reply to
Techrat

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