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Redstone Repeater

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This page is about the signal-repeating redstone device. For the comparison device, see Redstone Comparator.

Redstone Repeaters are quite complex devices. They have several uses, including in diodes and "repeating" signals.

Repeating

True to their name, Redstone Repeaters can "repeat" a signal, powering it back to full strength. This is useful for long Redstone lines where just dust would lose its power in 15 blocks (this makes it possible to be safe when detonating a large amount of TNT; the surgeon general says that standing next to a block of TNT that's exploding may be hazardous to your health). 

Delaying

By default, Redstone Repeaters take 1 game tick to transmit a signal to the next block. This can be lengthened by right-clicking. 1 click equals 2 ticks delay; 2 clicks equals 3 ticks delay; and 3 clicks equals 4 ticks delay. 
Redstone (Repeater, Active)

"Strong" and "Weak" Signals

When a powered Redstone Repeater faces an opaque block, the opaque block will become a power source of its own (similarly to a Block of Redstone) as long as the repeater is powered. In contrast, just redstone wire will not turn an opaque block into a power source.

Crafting

Crafting requires 1 Redstone, 2 Redstone Torches, and 3 Stone.
Redstone-repeater
Technical Blocks
Liquids Water WaterLava Lava
Redstone Piston Piston ExtensionRedstone Redstone WireRedstone Torch Redstone Torch (Off)Redstone Lamp Redstone Lamp (On)Redstone Repeater Redstone Repeater (On)Redstone Comparator Redstone Comparator (On)
Plants Nether Wart Nether Wart (Growing)Potato Potato (Growing)Carrot Carrot (Growing)Wheat Wheat (Growing)
Misc Fire FireEnd Portal (Block) End Portal (Block)Nether Portal Nether Portal (Block)Locked Chest Locked Chest
Crafted Blocks
Crafted Blocks Brick (Block) Brick (Block)Beacon BeaconRedstone Torch Redstone TorchBlock of Diamond Block of DiamondBlock of Emerald Block of EmeraldBlock of Gold Block of GoldBlock of Redstone Block of RedstoneBlock of Iron Block of IronBlock of Coal Block of CoalBlock of Lapis Lazuli Block of Lapis LazuliFlower Pot Flower PotItem Frame Item FrameHopper HopperDropper DropperDispenser DispenserLever LeverPressure Plate Pressure PlateButton ButtonDoor DoorTrapdoor TrapdoorPolished Andesite Polished AndesitePolished Diorite Polished DioriteSlab SlabBookshelf BookshelfJack o'Lantern Jack o'LanternStained Glass Stained GlassStained Clay Stained ClayBlock of Quartz Block of QuartzChest ChestCrafting Table Crafting TableFurnace FurnaceAnvil AnvilEnchantment Table Enchantment TableEnder Chest Ender ChestTrapped Chest Trapped ChestStained Glass Pane Stained Glass PaneSlime Block Slime BlockBed BedNote Block Note BlockSticky Piston Sticky PistonRedstone Lamp Redstone LampFence Gate Fence GateRedstone Repeater Redstone RepeaterRedstone Comparator Redstone ComparatorPowered Rail Powered RailActivator Rail Activator RailBoat BoatMinecart MinecartMinecart with Furnace Minecart with FurnaceCake CakeBrewing Stand Brewing StandCauldron Cauldron

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