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Does this RF switch Bi-Directonal?

  1. 15th April 2012 08:59 AM #1
    EngIntoHW EngIntoHW is offline

    Does this RF switch Bi-Directonal?

    Hi,

    I'm trying to figure out whether this RF switch is Bi-Directonal, i.e. whether it transfers RF signal from selected input to output AND from output to selected input.

    P/N: CCR-33S3O
    Description: SPDT, 12V FAILSAFE, DC-18GHZ
    Datasheet: http://www.alliedelec.com/search/pro...0578#tab=specs)

    Can you tell whether it's bi-directional or not?

    Thank you very much.
  2. 15th April 2012 09:49 AM #2
    JimB JimB is offline
    Your link appears to be busted.

    But yes, the relay is bi-directional. The high frequency wiggly zigglies can pass through in either direction.

    JimB
    (In frivolous mood)
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    Experience is directly proportional to the value of the equipment ruined.
  3. 15th April 2012 10:41 AM Thread Starter #3
    EngIntoHW EngIntoHW is offline
    Hi Jim,
    Thanks!

    How could you tell that it is bi-directional?
    Did they specify it in datasheet? as I didn't see any hint for that.
    0
  4. 15th April 2012 10:51 AM #4
    JimB JimB is offline
    It is a relay, an electromechanical relay.

    The connections are done with bits of metal making ohmic* contacts.
    Trust me, it is just a relay and like any other relay, the contacts don't care which way the current flows.

    JimB

    *AAAHHHHH, lets not start another discussion on ohms law!
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    Experience is directly proportional to the value of the equipment ruined.
  5. 15th April 2012 07:30 PM Thread Starter #5
    EngIntoHW EngIntoHW is offline
    Hi Jim,
    Thanks a lot!

    I have one additional question please, which I did not quite understand from datasheet.

    This is a similar RF Switch - CCRT-33S3O - only that the N.O. and N.C. ports are terminated with 50Ω resistors.
    (Datasheet: http://www.electro-tech-online.com/c.../CCRT-33FS.pdf )
    sdfdfdfs.jpg

    For some reason, they gave the Power handling of the Not-Terminated RF Switch:
    aaasss.jpg

    Does it mean that in the DC-3GHz range, each of the IN, N.C. and N.O. ports can handle 80W?



    Thank you again!
    0
  6. 15th April 2012 08:53 PM #6
    JimB JimB is offline
    Does it mean that in the DC-3GHz range, each of the IN, N.C. and N.O. ports can handle 80W?
    Yes.

    To be more specific, it means that the relay will pass 80watts from the IN port to the selected port NO or NC.

    The port which is not selected is terminated with a resistor which can dissipate a maximum ot 2 watts.

    JimB
    +1
    Experience is directly proportional to the value of the equipment ruined.
  7. 17th April 2012 08:08 AM #7
    Mikebits Mikebits is offline
    wiggly zigglies ? lol. They must of covered that term in the class I slept through.
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  8. 17th April 2012 09:30 AM #8
    JimB JimB is offline
    wiggly zigglies ? lol. They must of covered that term in the class I slept through.
    Yes, you at the back!

    Pay attention!

    JimB
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    Experience is directly proportional to the value of the equipment ruined.
  9. 22nd April 2012 04:57 AM #9
    unclejed613 unclejed613 is offline
    Quote Originally Posted by Mikebits View Post
    wiggly zigglies ? lol. They must of covered that term in the class I slept through.
    yes, and the SWR bridge is so the SWRs can cross from one port to the other....... you must have slept through that class too....
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  10. 22nd April 2012 07:29 AM #10
    JimB JimB is offline
    Quote Originally Posted by unclejed613 View Post
    yes, and the SWR bridge is so the SWRs can cross from one port to the other.
    Mmmm... I will have to reflect on that for a few minutes.

    JimB
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