The Buffer Gate is a Redstone Logic device. When placed, the
input is nearest to the player. The other three sides are output
only, making this gate a diode much like the Redstone Repeater.
The three output squares will power only if it receives a
Redstone signal from its input side, allowing for the creation
of one way circuits. UsageEditIt's better to use this device
instead of the normal vanilla repeater, if you want to place it
in a corner. The Buffer Gate also can be used as a repeater with
three outputs, as there is a slight delay between the time when
a Redstone current reaches the buffer and when the buffer
outputs a redstone current. This delay can be used for a "runway
effect" with lights in a pathway. It could also be used to split
a Redstone current into three, great for compact redstone
circuits.