Questions tagged [x-capacitor]

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Are there any gotchas to using Safty Capacitors (X1/X2 box style) in the construction of a filter?

I guess this is just not done for whatever reason. I hit Google and even after over 20 mins could not really find any information on point. I've got a fair amount of .47uF and .68uF X1/X2 Metallized ...
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0answers
29 views

X2 capacitor discharge/bleeder

My application has a High voltage battery (close to 530v) which is then connected to a DC DC converter that has a input X2(30µF) capacitor. My question is about the bleeder resistor design. Would ...
24
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2answers
4k views

What killed these X2 caps?

A few years ago, I designed an MCU-controlled dimmer driving a 150W mains halogen lamp. This is in Western Europe; 50Hz 230VAC. It uses X2-rated capacitors as capacitive droppers for the power supply, ...
5
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1answer
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X capacitor selection for SMPS power supply

Few months back, I designed a switch mode power supply using Viper22A chip. Now, I am trying to improve that design. The new circuit is intended for universal input (85 VAC - 265 VAC). Output will be ...
0
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1answer
73 views

How to find an X capacitor

Working from a data sheet reference design a 47nF/X 250V capacitor is recommended. What makes a capacitor an X capacitor? From some googling i've found that X capacitors are meant to go across mains....