Questions tagged [metal-film]
The metal-film tag has no usage guidance.
15
questions
1
vote
3
answers
178
views
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 ...
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 ...
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 ...
0
votes
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 ...
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 ...
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 ...
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 ...
0
votes
0
answers
43
views
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?...
0
votes
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 ...
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?
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 ...
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 ...
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 ...
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 ...
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 ...