Para los lectores que necesitan altas tensiones continuas, se puede construir una fuente de alimentación de baja corriente con pocos componentes. La fuente de alimentación descrita suministra hasta 150 V en la red de 110 V y hasta 300 V en la red de 220 V. La corriente, sin embargo, no debe exceder algunas decenas de miliamperes. Los transmisores de válvulas de baja potencia y otros circuitos similares se pueden alimentar desde esta fuente. Sin embargo, observamos que no está aislado de la red eléctrica, por lo que se deben tomar precauciones contra descargas accidentales. El diodo debe ser 1N4004 si la red es de 110 V o 1N4007 si la red es de 220 V, El capacitor debe tener valores entre 4.7 uF y 50 uF con tensiones de trabajo de al menos 200 V si la red es de 110 V y al menos 300 V si la red es de 220 V. Los resistores de 4.7 k ohms deben tener disipación de al menos 2 W. Para usar, verifique con el multímetro las tensiones obtenidas en cada terminal, anotándolos, ya que pueden variar considerablemente dependiendo de las tolerancias de los componentes. Si, al conectar cualquier circuito, hay una marcada caída de voltaje, es una señal de que la corriente drenada por ese circuito es mayor que la que puede suministrar la fuente. En algunos casos, este problema se puede compensar conectando el equipo a un terminal que proporciona un voltaje más alto. No toque ningún punto de la fuente o el dispositivo alimentado cuando esté en funcionamiento, ya que la fuente no está aislada y puede causar descargas peligrosas. Si desea tener aislamiento para mayor seguridad, puede usar un transformador para este propósito.

 

Fuente de alta tensión
Fuente de alta tensión

 

 

 

18.841MBMemory Usage44.45msRequest Duration
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PHP Version8.3.20
Identityguest
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Templatecassiopeia
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