In our case (diagram 1) when there is no voltage applied to the coil the fan and green LED are turned ON . When we apply voltage to the coil (diagram 2) the relay switches its contacts and now the ...

Circuit diagrams use symbols to represent these, ... Photo and symbol for single pole, double throw switch (SPDT) - microswitch. single pole double throw (SPDT) switch; ...

The Double Pole Single Throw DPST relay is the equivalent of 2 SPST switches (NO Normally Open and NC Normaly Closed) and can be used to switch 2. Aspencore network. ... circuit diagrams and crazy ...