An electrical circuit comprising: a printed-circuit board having a first series of holes, and a connector comprising: - a casing designed to be coupled directly on the printed-circuit board; and - a set of electrical terminals inserted within said casing and designed to couple with said first series of holes made in said printed-circuit board, said circuit being characterized in that said connector comprises: - a body designed to move within said casing and on which said set of terminals is fixed, where said terminals have projecting portions that project out of one side of said body and are designed to couple with said holes of said printed-circuit board, said first series of holes of said printed-circuit board receiving the projecting portions of the electrical terminals of said connector; - a clamping element mounted within said casing, for gripping said portions of said terminals against edges of said holes of said printed-circuit board; and - cam means (64, 44, 44') provided on said body and on said clamping element, which are configured for activating said clamping element as a result of a movement of said body within said casing. a printed-circuit board having a first series of holes, and a connector comprising: - a casing designed to be coupled directly on the printed-circuit board; and - a set of electrical terminals inserted within said casing and designed to couple with said first series of holes made in said printed-circuit board, said circuit being characterized in that said connector comprises: - a body designed to move within said casing and on which said set of terminals is fixed, where said terminals have projecting portions that project out of one side of said body and are designed to couple with said holes of said printed-circuit board, said first series of holes of said printed-circuit board receiving the projecting portions of the electrical terminals of said connector; - a clamping element mounted within said casing, for gripping said portions of said terminals against edges of said holes of said printed-circuit board; and - cam means (64, 44, 44') provided on said body and on said clamping element, which are configured for activating said clamping element as a result of a movement of said body within said casing. - a casing designed to be coupled directly on the printed-circuit board; and - a set of electrical terminals inserted within said casing and designed to couple with said first series of holes made in said printed-circuit board, said circuit being characterized in that said connector comprises: - a body designed to move within said casing and on which said set of terminals is fixed, where said terminals have projecting portions that project out of one side of said body and are designed to couple with said holes of said printed-circuit board, said first series of holes of said printed-circuit board receiving the projecting portions of the electrical terminals of said connector; - a clamping element mounted within said casing, for gripping said portions of said terminals against edges of said holes of said printed-circuit board; and - cam means (64, 44, 44') provided on said body and on said clamping element, which are configured for activating said clamping element as a result of a movement of said body within said casing. - a body designed to move within said casing and on which said set of terminals is fixed, where said terminals have projecting portions that project out of one side of said body and are designed to couple with said holes of said printed-circuit board, said first series of holes of said printed-circuit board receiving the projecting portions of the electrical terminals of said connector; - a clamping element mounted within said casing, for gripping said portions of said terminals against edges of said holes of said printed-circuit board; and - cam means (64, 44, 44') provided on said body and on said clamping element, which are configured for activating said clamping element as a result of a movement of said body within said casing.