Control circuit for wire printer - is designed to facilitate attainment of constant impression energy via electromagnetic operating elements

摘要

In order to attain constant impression energy, the supplied electrical energy is converted into kinetic energy through voltage-dependent regulation of the current flow time of the electro-magnetic operating elements in such a way that it remains constant within an associated operational cycle. The circuit comprises a symbol generator to which is fed the coded signal for the selected symbol, and a gate circuit leading to a switch which renders possible the flow of current to the electro-magnetic operating element (e.g. wire magnet of wire printer) through a voltage or current source. A time stage connected to the gate circuit ensures that the current flow time is reduced if the direct voltage is high or is increased should the voltage be small.