home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

   alt.engineering.electrical      Electrical engineering discussion forum      2,547 messages   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 934 of 2,547   
   Bob to All   
   Schematic Symbol I Am Not Familiar With:   
   09 Sep 13 15:31:31   
   
   From: rgsros@notme.invalid   
      
   Hello,   
      
   Have a forced hot water system for home heating that uses the typical 2   
   wire Honeywell thermostat to control a Honeywell RA832A switching relay.   
      
   The switching relay closes the circuit to the thermopile, as well as   
   closing the 110 V circuit for the water circulator.   
      
   There is also a transformer that provides 24 V for the thermostat and   
   the relay.   
      
   Question:   
      
   Guess I'm dating myself somewhat here, but there is a symbol that I am   
   not familiar with in the instruction sheet for it.   
      
   The secondary of the transformer (going to the thermostat) shows what is   
   similar tho the common resistor symbol of   
   3 points up, and 3 points down from the baseline.   
      
   But this symbol has only 1 point up, 1 point down, and then the return   
   to the baseline.   
      
   I don't think it is meant to be a resistor.   
      
   It is drawn close to the relay contact symbols.   
      
   Could it be meant to be the coil for the relay, perhaps ?   
      
   Or,... ?   
      
   Thanks,   
   Bob   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca