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Una vez abierto el aparato, y antes de tocar nada, procedemos a descargar
todos los condensadores, para ello empleamos una resistencia de alta potencia,
una bombilla, o cualquier elemento que tenga un consumo alto de corriente.
Una vez descargados, conviene cortocircuitarlos con un alicate de mango
aislado para de esta forma asegurar que la descarga es real, ya que en
ocasiones una bombilla con el filamento abierto o una resistencia quemada,
puede hacernos pensar que el condensador está sin carga cuando no es cierto.
En aparatos alimentados a baterías o con poca tensión, por ejemplo 12v, 24v,
etc, también debemos descargar los condensadores ¿Por qué?, la razón es
muy simple, una tensión de 12v no supone un peligro para nosotros, pero
puede quemar el medidor de ESR, el capacímetro o cualquier otro aparato de
medida ( tester en ohmios).
Una vez descargados los condensadores procedemos a medir en sus extremos
con el ESR –Meter.
Un condensador en buen estado tiene poca o nula resistencia al paso de
la corriente alterna, dependiendo del valor (capacidad) del condensador, esta
resistencia puede ir desde 0 – 8 ohmios para condensadores de 10 𝛍F hasta
los cero ohmios para condensadores de 470 𝛍F.
Así un condensador de 10𝛍F/16v con una ESR de 8 ohmios está
perfectamente bien, mientras que un condensador de filtrado de 2200 𝛍F/16v
con una ESR de 3 ohmios está definitivamente MAL.
Es decir, el valor de ESR debe ser tanto menor como mayor sea la capacidad
del condensador, dicho de otro modo, a grandes capacidades, la ESR debe ser
cero , y solo podemos tener algunos ohmios de ESR en condensadores
pequeños, en todos los demás casos, el condensador está mal.
ESCALA DE REFERENCIA DEL ESR - Meter
Para saber cuales son los límites de resistencias dependiendo de la capacidad
y el voltaje del condensador, mostramos una tabla, con el valor de
capacidad/tensión del condensador con su ESR máxima para un condensador
en buen estado.

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Esr1.parte 5docx

  • 1. Una vez abierto el aparato, y antes de tocar nada, procedemos a descargar todos los condensadores, para ello empleamos una resistencia de alta potencia, una bombilla, o cualquier elemento que tenga un consumo alto de corriente. Una vez descargados, conviene cortocircuitarlos con un alicate de mango aislado para de esta forma asegurar que la descarga es real, ya que en ocasiones una bombilla con el filamento abierto o una resistencia quemada, puede hacernos pensar que el condensador está sin carga cuando no es cierto. En aparatos alimentados a baterías o con poca tensión, por ejemplo 12v, 24v, etc, también debemos descargar los condensadores ¿Por qué?, la razón es muy simple, una tensión de 12v no supone un peligro para nosotros, pero puede quemar el medidor de ESR, el capacímetro o cualquier otro aparato de medida ( tester en ohmios). Una vez descargados los condensadores procedemos a medir en sus extremos con el ESR –Meter. Un condensador en buen estado tiene poca o nula resistencia al paso de la corriente alterna, dependiendo del valor (capacidad) del condensador, esta resistencia puede ir desde 0 – 8 ohmios para condensadores de 10 𝛍F hasta los cero ohmios para condensadores de 470 𝛍F. Así un condensador de 10𝛍F/16v con una ESR de 8 ohmios está perfectamente bien, mientras que un condensador de filtrado de 2200 𝛍F/16v con una ESR de 3 ohmios está definitivamente MAL. Es decir, el valor de ESR debe ser tanto menor como mayor sea la capacidad del condensador, dicho de otro modo, a grandes capacidades, la ESR debe ser cero , y solo podemos tener algunos ohmios de ESR en condensadores pequeños, en todos los demás casos, el condensador está mal. ESCALA DE REFERENCIA DEL ESR - Meter Para saber cuales son los límites de resistencias dependiendo de la capacidad y el voltaje del condensador, mostramos una tabla, con el valor de capacidad/tensión del condensador con su ESR máxima para un condensador en buen estado.