| 摘要 |
engineering physics; traffic control signal lights, light panels, advertisement hoardings. SUBSTANCE: information display has rectifier bridge, electronic switch with parallel- connected protective choke, diode-capacitor filter with equalizing resistor, dynamic and time-controlled current regulators with correcting circuits, control pulse sequence shaping unit and supply voltage generating unit for control pulse sequence shaping and regulation-current voltage setting unit. Light-emitting diode array has n matrices wherein series-interconnected groups of light-emitting diodes are made in the form of m like-polarity parallel-connected light-emitting diodes. Each matrix is connected at one nodal point through control member of respective current regulator, diode-capacitor filter, and electronic switch to rectifier bridge output. Time-controlled inputs of current regulators are connected to respective outputs of control pulse sequence shaping unit. Other nodal point of each matrix is connected through current stabilizer measuring circuit to common bus of rectifier bridge and diode-capacitor filter. One of current-regulator correcting circuits is made in the form of capacitor connected in parallel with nodal points of each matrix of array and other current-regulator correcting circuit is set up of series-connected capacitor and resistor inserted in positive feedback circuit of current regulator. Control input of electronic switch is connected to respective output of control pulse sequence shaping unit. EFFECT: enhanced reliability and efficiency of display. 2 dwg
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