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Registered Member #79
Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
What is it about the construction of some capacitors that causes them to get hot in TC use, while others don't? Does anyone know a good resource about the construciton of pulse capacitors or HV caps? I haven't been able to find anything good.
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
All caps get hot when high currents are passed trough their plates. Caps wich have thicker metal foil instead of metalization layer usually pass better. Also, already mentioned dielectric loss is very important thing.
Polypropylene (MKP and similar) caps seem to be of lowest dielectric loss compared to other cap types.
Special types of ceramics can be even better performers but they are not very common and cheap. ('normal' ceramics have high losses and terrible temp-co).
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Capacitor question
