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Topic: NA5W-K relay (Read 3 times) previous topic - next topic

retrolefty

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I drawed what you say,


The diode may very well be drawn backwards and if installed that way will short out the output pin when turned on high and burn out the pin. Diodes don't have a + and - sign on then, they have a cathode identification mark. In your example you would want the cathode to wire to the output pin and the anode lead to wire to the ground pin.

By the way if your relay has + and - labeled on the coil terminals then is must already have an internal diode wired across the coil. Some DC relays have an internal diode option avalible and many do not, check your datasheet.

Lefty

clankill3r

What 2.7V circuit?
I connect it to my canon camera with a jack plug. Sorry i forgot to tell that.

Once you have the relay clicking on an off you simply connect the contacts up to the circuit you want to switch.
That will be 3 and 5?

By the way if your relay has + and - labeled on the coil terminals then is must already have an internal diode wired across the coil. Some DC relays have an internal diode option avalible and many do not, check your datasheet.

i can't find it in the datasheet so i don't think it has it.

Grumpy_Mike

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That will be 3 and 5?

No 4 and 5

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i can't find it in the datasheet so i don't think it has it.

Not sure I follow the logic there. I can't find next weeks winning lottery numbers but I am sure there are some.

Measure the resistance of the coil with a meter, if it is different in one direction to the other then there is a diode in there.
If you haven't got a meter then get one, they are very cheap and you have no business doing electronics without one.

clankill3r

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That will be 3 and 5?


Where is 4 for?

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Not sure I follow the logic there. I can't find next weeks winning lottery numbers but I am sure there are some.

Measure the resistance of the coil with a meter, if it is different in one direction to the other then there is a diode in there.
If you haven't got a meter then get one, they are very cheap and you have no business doing electronics without one.


I have a meter, i will measure it, thanks for the help.



Grumpy_Mike

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Where is 4 for?

To the question where is 4, it is between 3 and 5.

To the question why use 4, it is because it is the common connector on the relay contacts.

When the relay is not energised there is contact between 3 and 4, when the relay is energised there is contact between 4 and 5.
There is never any contact between pins 3 and 5, so connect them up if you want but you will not get any current flowing between them.

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