Hello . I just get some non-polarized capacitor .But What type of capacitor are these? Thanks!
Asked by login721 5 years ago
I connected two terminals of capacitor and they produce the big spark is the capacitor still works...or it get destroyed ......the capacitor is from flash of camera???
Asked by rachit59 8 years ago
I have a capacitor with code 20k but i don't know its value please help!!!!
Asked by Atul009 5 years ago
Asked by ikiron 3 years ago
I got a capacitor from my disposable camera but it was damaged so i buy a 330v 120uf capacitor but i cant charge it on my 1.5v battary i wont to know how do a 1.5v battary charge 330v capacitor in a disposable camera
Posted by omartech 4 years ago
Function and application of capacitors; what to use for high and low voltage applications, what to use for the bike?
Asked by BobS 9 years ago
Hi how would a charge a 450v 1800uf capacitor? i used to charge it with a photo flash circuit but the small capacitor would burn out making me unable to charge it. i do not know how to read schematics. is there any step by step video any one can provide?
Asked by justin.espinoza.790 3 years ago
I mean like a healthy teen to 30 year old
Asked by miiwii3 8 years ago
Hello everyone! I got a microwave, Sharp R21LCF with a bad capacitor. A friend of mine used to have the same Sharp microwave, but older model, R21JCA. When his R21JCA broken and could not be repaired; he took out the parts that still work and save them. So he has a spare capacitor. I compare both capacitors and found his good capacitor has a 2400VAC with .94 uF comparing to my bad capacitor, which has 2300 VAC with 1.00 uF. I understand that you can replace the capacitor with a higher voltage rating, but not sure if .6 uF difference would be ok for replacement? May i ask for your expertise opinion/input? Thank you very much for yr time! attached are the two links for those capacitor I am asking about. Bad capacitor from R21LCF http://img4.imageshack.us/img4/5430/nve5.jpg Good capacitor that we want to use from R21JCA http://img16.imageshack.us/img16/721/d4f5.jpg
Posted by didadee 4 years ago
My father (an electrical engineer) told me that if a capacitor is charged and than shorted out than it can fail, possibly with explosive results. However I have seen way to many Youtube videos of capacitor banks being shorted and nothing but a big spark happening. Who is right? Can anybody help me?
Asked by junits15 9 years ago
I built an ignition coil driver with a ne555 timer I think I may have installed the electrolytic capacitor in the circuit backwards. The circuit oscillated then started to die out would this be the capacitor failing?
Asked by The MadScientist 7 years ago
I don't know which is the positive and negative lead on a capacitor. I want to know how to know which lead is positive or negative.
Asked by eeeXsmart 8 years ago
I have a 1.1μ capacitor with voltage capacity of 440V. I am inserting a 1000Ω in series. My question is how much time will it take to almost completely charge if I'm applying 12v at 0.5A?
Asked by IshaanP5 4 months ago
Alright I am finally getting around to making a coil gun, I made a measly bank of 30 330v 100uf capacitors, totaling 3k uf. However, I just took apart a big ass power supply for battery banks, now I have two coke-can sized 250 volt capacitors, each rated 4400 uf, and I am going to hook them up in parallel, making it an 8200uf capacitor bank, to charge with camera flash circuits in parallel as well. Thing is, I need to find a relay that won't blow up from this, so what kind of amperage will I be getting sending this through a coil?
Asked by XOIIO 5 years ago
Most people (okay, well tech guys :P) know that if you put 2 identical capacitors in series you can double the voltage they can handle and you cut in half the capacitence. These 2 capacitors together have 2x the Joules as one capacitor alone. But if you charged them each seperatly, and then connected them in series, would they have 4x the joules as original? For example, lets say I have a 16 volt 100uF capacitor, if each was charged in parallel to 16 volts and then connected in series, when discharged would it have the same amount of power as a 32 volt 100uF capacitor, or would it still have the same power as 2 capacitors charged in series (from a 32 volt power supply)? This question seems kind of stupid, but using what seems like good logic (or bad if your on the other side) you could argue this both ways. But there's only 1 right answer.
Asked by guyfrom7up 8 years ago
I need a bunch of high power capacitors and I don't have the money to buy them. I have a couple ways I have seen and I have done one that kind of works. 2 L bottle - I don't drink enough pop to make enough of these ?pvc? - could I substitute a thin pvc pipe for the 2 litter bottle Leyden jar capacitors - I saw these cool ones that have a tube like pringles uses, al tape around the outside, and then they just push the can into it as the storage. ?pvc? - Could I also substitute pvc for this. Styrofoam cups - I have read about, but not seen this one. Could I just wrap a cup in foil and then stack it. Apply positive to top cup and negative to bottom
Asked by jj.inc 7 years ago
Is 470 mf close enough to replace a 500 mf cap ? Both are 25 volts
Asked by eafrymer 2 years ago
How do I measure the capacitance of something, I looked at the local ACE and none of the meters have a farad reading or anything else similar to capacitance. We have an analog one, and I was wondering if there is a way to use it I just don't know of.
Asked by jj.inc 6 years ago
Ignoring resonance what should the average capacitance of a Tesla coil tank capacitor be? In what appliances can you find large high voltage capacitors, preferably above 10nF? And can you use microwave capacitors in series for a Tesla coil tank capacitor?
Asked by The MadScientist 7 years ago
Asked by deamon4 9 years ago
Good day everyone, I am sitting with a issue of changing a capacitor on a board but the factory default pins are to short to reach their holes. Is there a way to make them longer other then needing to get another new capacitor? I am using a 450V 150uf(M) capacitor.
Posted by ChristopherC297 1 year ago
Why is it that as super capacitors capacitance goes up the internal resistance goes down? I'm looking for a tiny capacitor that can supply 0.3 volts20mA (I'm going to be powering flexinol, not an LED) for 1 second. I don't want the capacitor to be huge because I'm making a beam bot where size is a factor for charging time and because of it's physical size.
Posted by guyfrom7up 10 years ago
Ive seen volt numbers on capacitors but people mostly just mention uf. but the uf is the same but the size of the cap looks different. does voltage matter?
Asked by JustModIt 7 years ago
I am looking for some extremely powerful capacitors, I know that you can buy old grid transformers and I wondered if there was some kind of capacitor they use one the grid which could also be available. If not, what industry would have old capacitors cheap that still work, I'm looking around 300 volts 1 Farad or more
Asked by jj.inc 5 years ago
Asked by JamesRPatrick 8 years ago
I have just built a high voltage glass capacitor for my Tesla coil at a 0.03uF 50KV rating and I have found that the leakage is quite high, the stored energy is almost completely gone in 15 seconds does anyone know how to resolve this?
Asked by The MadScientist 6 years ago
I know this is a basic question, but it has bugged me, and is in two parts. The first: Are resistors like reduction valves for electricity? i.e. Do they simply absorb and dissipate excess electricity, or do they restrict its flow, as in making a large capacitor discharge its energy through a resistor to prolong output from the capacitor? Also, do capacitors store electricity until it is full, then release it, or is that only when they fail? Thanks!
Asked by mad magoo 9 years ago
Can you use a mpf cap in a vttc for the tank circuit?
Asked by electricfan 8 years ago