| 摘要 |
FIELD: light sources, advertising technology. ^ SUBSTANCE: when i-numbered one of first M keys is in disabled state, k-numbered one of second N keys is enabled, energy of electric current is accumulated in magnetization inductiveness of k-numbered one of N present transformers, then k-numbered one of second N keys is disabled, i-numbered one of first M keys is enabled, energy of electric current accumulated in magnetization inductiveness of k-numbered transformer is transferred to k.i-numbered light diode of light diode matrix, and after full discharge of magnetization inductiveness of k-numbered one of N transformers and stopping of electric current flow through k.i-numbered light diode of light diode matrix, i-numbered one of first M keys is disabled, while duration of enabled state of i-numbered one of first M keys should exceed duration of energy discharge of electric current of k-numbered transformer, and duration of enabled state of k-numbered one of second N keys is altered dependently on required brightness of light of k.i-numbered light diode of light diode matrix. Device for realization of method includes N transformers, starting points of primary windings of which are connected to potential pole of electric power source, and ends through force electrodes of keys are connected to starting points of secondary windings of transformers and to common pole of device, while ends of secondary windings of N transformers are connected to points of engagement of anodes l.i,...k.i, ,...N.i groups of light diodes of light diode matrix, respectively. ^ EFFECT: lower costs, higher efficiency. ^ 2 cl, 2 dwg |
