From: arl_123234@hotmail.com   
      
   On 6/5/19 3:06 AM, gfretwell@aol.com wrote:   
   > Say you have a relay coil rated at 24VAC, is there a rule of thumb   
   > what the DC current might be to operate it? I do understand the   
   > residual magnetism thing.   
   >   
      
   Hello, and I'm unaware of any rule-of-thumb.  A web search reveals   
   there's info out there on operating AC relays on DC and vice-versa.  A   
   relay designed to operate on 24 VAC will probably work OK on 24 VDC (or   
   even less voltage).  If you have the relay and an adjustable DC power   
   supply capable of supplying the requisite current, that would be a safe   
   way to proceed as you wouldn't want the relay coil to overheat (assuming   
   the switching application via relay isn't just momentary contact).   
   Sincerely,   
      
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   J. B. Wood	            e-mail: arl_123234@hotmail.com   
      
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