Welding device for carrying out a capacitor discharge welding method, wherein the capacitor discharge welding method is a resistance welding method, in which a welding current (I w) is generated by discharging at least one capacitor, and the welding device has at least one first current source for generating a first capacitor current (I 1) for generating the welding current (I w) and a transformer with primary side and secondary side is provided and each current source is connected to the primary side of the transformer, so that the generated capacitor current flows through the primary side, so that in the secondary side the welding current (I w) is generated, and the first current source comprises - a first capacitor for providing electrical energy and - a first thyristor for switching on the first capacitor current (I 1) from the first capacitor, wherein at least one second current source is provided for generating a second capacitor current (I 2), in order to generate alternately with the first current source the welding current (I w), or gradually generate the welding current (I w) with the first and further current sources, wherein the second current source comprises - a second capacitor for providing electrical energy and - a second thyristor for switching on the second capacitor current (I 2) from the second capacitor and is connected to the first current source so that the switching on of the second capacitor current (I 2) can bring about a switching off of the first capacitor current (1 1) and/or the switching on of the first capacitor can bring about a switching off of the second capacitor, and characterised in that - the first capacitor is connected in series with the first thyristor and is connected to a superposition node so that the first capacitor current (I I) flows from the first capacitor through the first thyristor to the superposition node and - the second capacitor is connected in series with the second thyristor and is connected to the superposition node, so that the second capacitor current (I 2) flows from the second capacitor through the second thyristor to the first superposition node, wherein - by the activating of the first thyristor the electric voltage potential at the superposition node is increased so that the second thyristor is thereby deactivated if it was previously activated, and/or - by the activating of the second thyristor the electric voltage potential at the superposition node is increased so that the first thyristor is thereby deactivated if it was previously activated. - a first capacitor for providing electrical energy and - a first thyristor for switching on the first capacitor current (I 1) from the first capacitor, - a second capacitor for providing electrical energy and - a second thyristor for switching on the second capacitor current (I 2) from the second capacitor - the first capacitor is connected in series with the first thyristor and is connected to a superposition node so that the first capacitor current (I I) flows from the first capacitor through the first thyristor to the superposition node and - the second capacitor is connected in series with the second thyristor and is connected to the superposition node, so that the second capacitor current (I 2) flows from the second capacitor through the second thyristor to the first superposition node, - by the activating of the first thyristor the electric voltage potential at the superposition node is increased so that the second thyristor is thereby deactivated if it was previously activated, and/or - by the activating of the second thyristor the electric voltage potential at the superposition node is increased so that the first thyristor is thereby deactivated if it was previously activated.