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What is the difference between motor start capacitors with the same voltage and mfd rating but different case size?
Wiki User
∙ 12y ago
It could simply be a newer design, but it is also possible that the RMS current rating is different. Check the requirements against the data sheets.
Wiki User
∙ 12y ago
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Why does the voltage reading drop in measuring the potential difference across the capacitors?
Because the capacitor discharges. so voltage across the capacitor decreases.
How voltage doubler works?
The voltage doubler works by charging alternate capacitors on alternate half-cycles. Since the capacitors are in series, the voltage doubles.
What is the Difference between supply voltage and input voltage?
no difference...
What is the difference between 50 Hertz and 61 Hertz?
Frequency is determined by the supply voltage, not by the load. However, for reactive loads (inductors or capacitors), the reactance will vary according to the frequency applied.
What is the difference between a voltage converter and a voltage regulator?
the difference between a voltage converter to a voltage regulator,is that a voltage converter,converts or changing the desired voltage to be used while the voltage regulator,regulates the input of the voltage amount not to excess to its inputs.
What is the difference between capactive voltage transformer and potential transformer?
A capacitive voltage transformer (CVT) uses a (usually two) stacks of capacitors to reduce the votlage to a smaller internal potential transformer (PT). This makes them less expensive than an equivalent PT, but there can be a loss of accuracy.
Why doesn't birds get electric shock when they land on cables?
The voltage difference between the birds legs maybe very small. The shock comes when the voltage difference is large like between two different wires. Birds don't usually put their feet on different wires.
What if four capacitors of equal value are in series?
The total capacitance is one fourth of the capacitance of the individual capacitors. The voltage rating is four times the voltage rating of the individual capacitors (however to prevent uneven charging of the four capacitors and failure of one or more they must be paralleled with a voltage divider composed of four equal value resistors).
Why voltage is measured between 2 points?
because voltage is the 'electrical potential difference'. since a "difference" can only be evaluated between two points so is voltage :)
Why are capacitors parallel?
Capacitors are said to be connected together "in parallel" when both of their terminals are respectively connected to each terminal of the other capacitor or capacitors. The voltage (Vc ) connected across all the capacitors that are connected in parallel is THE SAME. Then,Capacitors in Parallel have a "common voltage" supply across them giving: VC1 = VC2 = VC3 = VAB = 12V
Should the capacitors used in electronic circuits have a minimum voltage rating of 25 volts?
Capacitors used in electronic circuits need not have a minimum voltage rating of 25 volts. Electronic circuits powered by batteries at 12 volts and below should work fine with capacitors rated at 15 volts.
When a voltage source is in series wit three capacitor then what will be the same?
Neither voltage applied to nor current through the capacitors will necessarily be the same when you have a voltage source in series with three capacitors that are in series with each other (transient response), but eventually a leakage current will be the same. Transient analysis will show when the DC source is first applied, Each capacitor will begin storing energy based upon the time constant for that particular capacitor (R*C). If all three capacitors are exactly the same, then the voltage across each will match while they charge up, and will be about 1/3 of the source voltage for each when completely charge. If they are different size capacitors, they will store different amounts, resulting in different voltage drops. In steady state, there will be some leakage current, which is extremely small, that will eventually given enough time be the same through all three capacitors. ANSWER: With different leakage each capacitor will experience a miss much of voltage that will make leakage more pronounced in a vicious loop making it all to fail. There is a solution that is to add an equal resistance across each capacitor to equalize the voltage such that each see the same voltage no matter what.
