A dynamic convergence circuit includes a source of waveforms at a first frequency coupled to a waveshaping network for producing a predetermined current wave through a convergence coil. A modulating stage including an active current conducting device is coupled to the convergence coil in a direct current manner. An input electrode of the active current conducting device is coupled to a source of second frequency waveforms which control the conduction of the device for selectively loading the convergence coil and modulating the first frequency convergence coil current at the second waveform frequency. The active current conducting device may be coupled to the convergence coil by means of a unidirectional current conducting device such that only portions of the convergence coil current of one polarity are modulated.