C2200 Turning On Relay With 5v?

Discussion in 'McIntosh Audio' started by robertgalka, Jun 27, 2018.

  1. robertgalka

    robertgalka New Member

    Messages:
    42
    Location:
    Winnipeg Manitoba
    Ai want my C2200 to turn on my my sequencing power conditioner. Basically I need it to close a relay with with the 5v output on the back. I tried a small mechanical relay and I believe there isn’t enough current to close the relay. Do I have any other simple options?

    Would the 5v output have enough current to close a solid state relay?
     

     

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  2. CruzBay

    CruzBay Well-Known Member

    Messages:
    705
    Location:
    Arlington, VA
    I don't think SSR's need much current at all to activate, so you'd probably be good.

    I also saw a few reed relays on Amazon that might function at lower current levels, they specify 500 Ohms, so (Ohm) legally they can only draw 1/100 of an amp.

    Excel Cell EDR2D1A0500Z SPST-NO Reed Relays, 0.5A, 5 VDC ~ $6 +shpg

    Hamlin Electron HE3621A0510 ~ $8 free


     
  3. robertgalka

    robertgalka New Member

    Messages:
    42
    Location:
    Winnipeg Manitoba
    I'll try one and post what happened. Thanks.
     
  4. dshoaf

    dshoaf That high voltage buzz

    Messages:
    10,118
    Location:
    Santa Cruz, CA
    You could just use a simple transistor switch for this such as a 2N2222. This schematic is from a Raspberry Pi hacker's box of tricks. The GPIO pin mentioned is about the same as the C2200's output. The 10K/100K resistor divider means there's not much current required to kick the transistor on.

    Cheers,

    David

    upload_2018-6-30_10-41-55.png
     
  5. robertgalka

    robertgalka New Member

    Messages:
    42
    Location:
    Winnipeg Manitoba
    The reed relay worked fine. I bought a Aleph PCB Reed Relay 5V 1A SD1A05AWJ off eBay.
     
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  6. Brice

    Brice AK Subscriber Subscriber

    Messages:
    1,463
    Location:
    Hoboken NJ
    I do it everyday with a C2500 for years.
    I have a SS DC Optical relay feeding all my tube gear.
     

     

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