why carbon brushes are used in electric motor
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ᴀ ᴄᴀʀʙᴏɴ ʙʀᴜsʜ ɪs ᴀ sʟɪᴅɪɴɢ ᴄᴏɴᴛᴀᴄᴛ ᴜsᴇᴅ ᴛᴏ ᴛʀᴀɴsᴍɪᴛ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴄᴜʀʀᴇɴᴛ ғʀᴏᴍ ᴀ sᴛᴀᴛɪᴄ ᴛᴏ ᴀ ʀᴏᴛᴀᴛɪɴɢ ᴘᴀʀᴛ ɪɴ ᴀ ᴍᴏᴛᴏʀ ᴏʀ ɢᴇɴᴇʀᴀᴛᴏʀ, ᴀɴᴅ, ᴀs ʀᴇɢᴀʀᴅs ᴅᴄ ᴍᴀᴄʜɪɴᴇs, ᴇɴsᴜʀɪɴɢ ᴀ sᴘᴀʀᴋ-ғʀᴇᴇ ᴄᴏᴍᴍᴜᴛᴀᴛɪᴏɴ. ғɪᴠᴇ ʙʀᴜsʜ ɢʀᴀᴅᴇ ғᴀᴍɪʟɪᴇs ᴀʀᴇ ᴜsᴇᴅ ғᴏʀ ʙʀᴜsʜ ᴍᴀɴᴜғᴀᴄᴛᴜʀɪɴɢ.
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A carbon brush is a sliding contact used to transmit electrical current from a static to a rotating part in a motor or generator, and, as regards DC machines, ensuring a spark-free commutation. Five brush grade families are used for brush manufacturing.
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