Abstract:
A lighting and starting device for two-electrode lamp includes a plurality of voltage-multiplier rectifying circuits parallelly connected to two electrodes of the lamp with stepping voltages, for instance, high, medium and low voltage levels, whereby upon selection of the desired voltage level, the light of the lamp can be adjusted optimumly.
Abstract:
A simplified power supply circuit includes: a primary capacitor connected across an anode and a cathode of a rectifier for rectifying an input voltage of high voltage and low current of AC current, a plurality of secondary capacitors connected in series in between a positive pole and a negative pole of the primary capacitor through a positive-pole on-off switch and a negative-pole on-off switch, each secondary capacitor having its positive and negative conductors respectively connected to an output positive terminal and an output negative terminal by an on-off switch circuit, and the secondary capacitors having their output positive and negative terminals connected in parallel for amplifying the low input current (with high voltage) to be a high output current (with low voltage) without using the heavy iron core and winding of a conventional transformer.