DPST NO/NC relay

[rookhappy]

I need a DPST relay to switch between two signals in the 10 MHz range. Unfortunately I am not very familiar with relays. I have found one that is described as such: DPST NO/NC relay and the link to the data sheet is:

http://www.clare.com/home/PDFs.nsf/

http://www/Lcc110.pdf/$File/Lcc110.pdf

My question is this: NO/NC means that one input is 'normally open' and the other is 'normally closed'. So if I apply 5v to the control line, this will activate the NC circuit and deactivate the NO circuit. So if I apply 0v to the control line is the opposite true? In other words will the NC circuit now be open and the NO circuit now be closed?

Also, does this seem like a good relay for the application or is there a better one available? Thanks.

 

[ScottyUK]

Teledyne make a range of 'proper' relays - not semiconductor switches - which are designed for RF applications:

http://www.teledynerelays.com/

They have a number of products which meet your requirements. A few of their products are available in small quantities from RS Components in the UK.



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If we learn from our mistakes,
I'm getting a great education!

 

[VEBill]

If you are trying to "...switch between two signals...", then a Double Pole Single Throw (DPST) relay is probably not the type of relay that you want (assuming that your signals are not balanced - two wire and other complications).

You probably want a Single Pole Double Throw (SPDT) relay to switch one moving contact between two signals.

NC and NO are as you stated. The word 'Normally' (Open or Closed) means when power is not applied to the coil.

 

[rookhappy]

Thanks for the information. I have found what I am looking for -

http://www.teledynerelays.com/pdf/electromechanical/rf341.pdf

A SPDT relay from teledyne.

 

[VEBill]

Make sure you understand and really do want the latching feature. It is useful for certain applications (saves power), but it can be a unnecessary complication (control wise) if you didn't really want it in the first place.