2 Pole Double Throw Relay

When the relay isn t powered both the red led and the dc fan are on.

2 pole double throw relay.

We re going to connect a double pole double throw relay to a circuit to light up leds. The poles may be form a or form b or one of each. Including two for the coil such a relay has a total of six terminals. 36 6 18 relay get it as soon as wed sep 9.

Omron ly2 ac110 120 general purpose relay standard type plug in solder terminal standard bracket mounting single contact double pole double throw contacts 9 9 to 10 8 ma at 50 hz and 8 4 to 9 2 ma at 60 hz rated load current 110 to 120 vac rated load voltage 4 6 out of 5 stars 18 12 47 12 47. When the relay is powered the red led and the fan shut off and the green led and the dc motor turn on. The dpdt relay double pole double throw is quite interesting and can be used in various scenarious including for changing the direction of a motor as you can see in the picture below. It has 2 terminals and 4 connectors and you can look at the dpdt relay as the equivalent of 2 single pole double throw spdt relays.

Dpst double pole single throw relays are equivalent to a pair of spst switches or relays actuated by a single coil. This is the circuit below.