Lincoln Service Parts 2 › Lincoln Electric 9SS26935-34 AC SUPERIMPOSITION & BOOST CIRCUIT BD. S26935-34 Lincoln Electric 9SS26935-34 AC SUPERIMPOSITION & BOOST CIRCUIT BD. S26935-34 Sale Price: $3,242.38 Original Price: $3,728.74 AC SUPERIMPOSITION & BOOST CIRCUIT BD. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! AC SUPERIMPOSITION & BOOST CIRCUIT BD. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1