Method for reducing conductor track spacing in electronic circuit boards and electronic circuit board with reduced spacing between conductor tracks

A printed circuit board comprising a circuit arrangement, having:

• an input part fed by a supply voltage, and
• an output part,
• wherein the printed circuit board has, between the input part and the output part, an intermediate conductor track which has an intermediate potential derived from the input part,
• wherein the intermediate conductor track maintains a functional insulation gap from the adjacent conductor tracks of the input part,
• wherein the intermediate conductor track maintains a safety-relevant insulation gap from the adjacent conductor tracks of the output part,
• wherein the intermediate potential has a voltage which corresponds at most to the supply voltage of the input part with respect to adjacent conductor tracks of the output part, or the intermediate potential has a potential with a voltage of which the value is lower than that of the voltage between the input part and the output part with respect to a ground potential or a potential of the neutral conductor of the supply voltage.