“Necesito generar 110 V para alimentar un equipo de 500 W, usando una batería común. Sin embargo, la tensión alternada producida debe ser de 60 Hz, perfectamente senoidal. ¿Puede ayudar?”

Muchos inversores simples generan señales que no son perfectamente senoidales, ya que utilizan circuitos osciladores que presentan fuertes distorsiones. Algunos llegan a tener picos mucho mayores que los 200 V, en un inversor de 110 V, si bien en promedio la tensión es de 110 V. Para alimentar equipos sensibles críticos que dependen de la forma de onda y de la frecuencia, estos variadores simples no sirven. Es por este motivo que siempre que publicamos un artículo de este tipo indicamos que sólo sirve para lámparas fluorescentes, lámparas incandescentes, electrodomésticos con motores y normalmente otros que no usan electrónica y que son sensibles a la forma de onda y frecuencia. En realidad, muchos operan en frecuencias más altas que 60 Hz justamente para obtener mayor rendimiento. Para aplicaciones críticas, el circuito debe partir de configuraciones muy complejas que normalmente utilizan amplificadores operacionales de alta potencia, microcontroladores y otros componentes que pueden generar formas de onda precisas.

 

 

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  • warningassets - No asset found for com_content.article.9064, falling back to com_content
  • warningassets - No asset found for com_content.article.9064, falling back to com_content
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