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Questions tagged [metal-film]

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1 vote
3 answers
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Moving electrons on the surface of a thin metal sheet with high current

I don't know if this is the right place to ask this because my question is a mix of physics and electronics. I'm in 12 grade, and wish to conduct a simple physics experiment. I would like to observe ...
44yu5h's user avatar
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1 vote
1 answer
129 views

How to visually distinguish metal film and ceramic capacitors (leaded)?

This question only involves the leaded components. Electrolytic capacitors are each to recognize since they are usually in cylindrical cans. However, I am not sure about distinguishing the other two ...
FlakR's user avatar
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2 votes
1 answer
151 views

Maximum allowable AC voltage for film capacitors as a function of frequency

For a project that I'm working on, I would like to generate an oscillating magnetic field. In order to achieve this, I would like to create a series LC circuit with multiple film capacitors in series ...
Mantabit's user avatar
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1 answer
159 views

Calculations relating to carbon film resistor

Im researching on carbon film resistors and film resistors in general, hence I would like to know certain things: Resistivity of carbon the film is made-up of? Does the resistivity depend on the type ...
Somanna's user avatar
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1 vote
1 answer
190 views

Changing film capacitors to ceramic capacitors in pulsed induction metal detector

I am looking at building a metal detector similar to the circuit below. In the instructions, it is stated that 'Capacitors with values less than 1uF are polyester film type (+/-10%)'. I am planning to ...
mr_js's user avatar
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0 votes
2 answers
286 views

Differences in Metallized Polypropylene Film Capacitors

I have two capacitors, and they are both Metallized Polypropylene Film Capacitors, but they look pretty diferent to me, one is red, a little bit shiny with round corners like this: and the other is ...
Nau's user avatar
  • 525
0 votes
1 answer
369 views

Difference between IRMS and Peak Current on Capacitor Rating

Background: I was looking at a spec sheet for a round metallized polypropylene film capacitor that gave two different current values for the "IRMS at 100 kHz -70 deg C" and the "Peak Current" I'm ...
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0 answers
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Must film capacitors be derated according to the voltage applied? [duplicate]

I know electrolytic capacitors must be derated according to the applied voltage, with some losing a significant part of their nominal value at high voltages. Is it a similar case with film capacitors?...
A.S.'s user avatar
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2 answers
352 views

Is there a thin metal film that I can solder wires to?

For instance, I bought some Dremel bits and inside the packaging were these small extremely thin pieces of metal film. Not sure what they were used for or what metal they were made out of. It ...
Vbs 's user avatar
  • 83
3 votes
1 answer
255 views

Is it safe to use an Y2 Capacitor where an X capacitor used to be?

Is it safe to use an Y2 Capacitor where an X capacitor used to be? I mean Y should be safer right? So Y2 where X should be is OK, but not the other way around, right?
JohnyTex's user avatar
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3 votes
1 answer
784 views

Failure of Metallized Film Capacitors

I have the following : Metallized film capacitor. I read in some papers that MFC are protected against short-circuit with a self healing. Self-healing is a phenomenon where in the event the ...
R Djorane's user avatar
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5 votes
3 answers
2k views

What happens when a power metal film resistor is exposed to higher power?

What is the worst thing that could happen if a power metal film resistor rated for 2W is exposed to 15W due to a short in the circuit? I have seen smoke being emitted but switched off the power supply ...
NK2020's user avatar
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0 votes
1 answer
876 views

Difference between metal film and carbon film resistors

I have a WS2812B RGB LED strip that I want to use with an Arduino. The directions state that it's best to use a capacitor and a resistor in order to have smooth operation. So I bought a 600pcs 30Value ...
StealthRT's user avatar
  • 807
3 votes
5 answers
5k views

When to use film capacitor

I've bought a bunch of film type capacitor as they were pretty cheap and I thought it was a good idea to get some and test them. (set here) So I'm trying to figure out what's the specific application ...
Emmanuel Istace's user avatar
6 votes
1 answer
8k views

Ceramic vs Metal Film Capacitor

I was working on building an induction furnace. What would be the difference in using a metal film capacitor or a ceramic capacitor with similar ratings and values. From what I know, the ceramic ...
Sherby's user avatar
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