| 摘要 |
Electronic circuit for the use of AC LEDs without the need to use converters or rectifiers, making use of the course of the wave in both polarities of the AC source, saving space and minimizing the number of components in the circuits. This circuit is formed by two series of LEDs connected in parallel but with an inverse polarity direction, being able to have or not have zener protection diodes. Capacitive arrangements for limiting the total current of the circuit may be added to this type of circuit. In this manner, when operation is effected at a sufficiently high frequency, the LEDs give the optical perception of being on at the same time. When this circuit is implemented in lighting and signalling systems, low-cost devices with low energy consumption and excellent lighting levels are obtained.
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