And in the control circuit you must connect both the relays to be on and off at a time. Connect terminal 87 of each relay to the fan power wire.
Wiring Schematic Request For Dual Fan Upgrade Page 3
Wiring relays in parallel. Relay coils connected in parallel no problem. Although relays do eventually wear out after repeated use the potential for failure can be reduced if they are replaced periodically or you could wire two relays in parallel. A mechanical relay has many downsides which make it the non ideal choice in most cases. Yes you can connect two relays of same type and rating in parallel to increase the amperage rating and output of the relays wires joined together and brought out to the terminals to be connected for the load. As the ac relays require a voltage across the output terminals to function correctly the second relay. Power terminal 30 of both relays prefferably with a power wire of their own.
Relay logic is all about wiring up relays for logical switching applications. The relays will not turn on simultaneously and thus one relay would carry the entire current at turn on. Terminal 86 of each relay connects to the positive voltage of your trigger system. Practical uses of relays. Once again 1 wire from each relay to the fan. This technique is commonly used in cooling fans.
With 2 four ohm voice coils youll have an 8 ohm load at rest and a 2 ohm load when the relay coils are energized. As the switch is pressed the circuit is either turned on or off. If wired in parallel one relay can fail and the other can continue to operate. Placing ac relays in parallel to increase the load current of a circuit is unfortunately not possible. Terminal 85 of each relay should be connected to the ground of your triggering system. But your power supply need to supply enough current flow through coil to energize the coil.
When ground is applied to each coil energizing the relay coils the voice coils are wired in parallel. This page demonstrates several simple ways to wire a relay for various applications. By combining multiple relays in series or parallel one can create complicated logic which would require. For each dual voice coil woofer that you want to change from series to parallel youll need two relays for each. Theres a time and place to use any piece of technology. Relay logic provides you with a guide for using ncd relay controllers and how they can be wired for many types of applications.
In general if two relays are connected in parallel the continuous current handling ability of the combination will be almost equal to the sum of the individual relays abilities but the switching ability of the combination may be that of the worse relay and in many cases wont be much better than that of the better one.
Gallery of Wiring Relays In Parallel
