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What is the reason for putting a voltage rating on resistors?
Due to the physical construction and size of the resistor, at a certain voltage, the insulation will break down and the applied voltage will arc over. This is generally bad. Operating the resistor within its voltage rating will prevent this failure mode.
Can resistors be used to use a 110 volts rated hairdryer in a 220 volt source?
Resistors could be used if you can find resistors with a high enough wattage rating to dissipate the heat that they will generate. Your best bet is to purchase a voltage adapter. The adapter is just a transformer that steps down the voltage from 220 to 110 volts. Locate on the hair dryer what the wattage draw is and then match the transformer (adaptor) to that wattage output.
Desription of a resistor?
Scroll down to related links and look at "6 different resistors - Wikipedia".
Summary of the step-down transformer?
A step- down transformer is one whose secondary voltage is less than its primary voltage, it is used to reduce 'step down' the voltage applied to it. The number of coils in the primary circuit is greater that the secondary circuit. For instance, to step down 480 Voltage to 240 voltage, you need a step down transformer whose ratio of primary coils to secondary coils is 2:1.
How is 11kv convert to 230v?
The higher voltage it transformed to a lower voltage by the use of a step down transformer.
Apart from transformers what other instrument can you use to step down voltage?
resistors - and they have to be physically large enought to dissipate the heat of the voltage x current you will drop out.
How come when you use a voltmeter the applied voltage is not equal to the individual voltage of a resistor when it should be because it's in parallel I got 2.5 V in the applied v but only 2 v in each?
There are two possible explanations... The resistance of the applied voltage is sufficiently high, in comparision with the resistors, to cause the resistors to pull the voltage down. The resistance of the voltmeter is sufficiently low, in comparision with the resitors, to cause the voltmeter to pull the voltage down.
What is the reason for putting a voltage rating on resistors?
Due to the physical construction and size of the resistor, at a certain voltage, the insulation will break down and the applied voltage will arc over. This is generally bad. Operating the resistor within its voltage rating will prevent this failure mode.
Can resistors be used to use a 110 volts rated hairdryer in a 220 volt source?
Resistors could be used if you can find resistors with a high enough wattage rating to dissipate the heat that they will generate. Your best bet is to purchase a voltage adapter. The adapter is just a transformer that steps down the voltage from 220 to 110 volts. Locate on the hair dryer what the wattage draw is and then match the transformer (adaptor) to that wattage output.
What resistor do I use to replace 3 9V batteries with an AC plug?
What you are trying to do with the resistors will not happen. First, batteries are a DC voltage supply. By using the resistors to drop the voltage down from 120 to 9 volts is going to waste a lot of power in the form of heat. When working on AC devices a transformer is used to change from one voltage to another. If you manage to get resistors large enough to dissipate this heat an drop the voltage you will still need to change the AC to DC. This can be done with a half wave bridge network but should be done with a full wave bridge network. This is a lot of work when a device is already made to do this in the form of a wall plug in adapter. An example of one of these devices is a cell phone charging adapter. There are adapters that have a multi voltage output. Find one that has an output of 9 volts DC. Check the nameplate on the adapter to make sure the voltage output is DC. The sizing of the adapter is in VA (volts x amps), (9 x amps of the connected load), so make sure that the load connected to the adapter is not above the adapters rating.
How can you step up or down voltage in dc system?
A: By using PWM or magnetic amplifiers
What is the formula to convert voltage levels to decibels?
Here you find the formula to convert voltage levels to decibels. Scroll down to related links and look at "How to calculate dB?"
How can you convert 1000000 volts to several hundred 9 volt power sources?
On the whole AC electrical conversions are done with transformers. In your question both step up and step down transformers will be utilized. Step up transformers will be utilized to get the generated voltage up to transmission voltage. At the voltage transmission destination the voltage will use step down transformers to decrease the voltage to the consumers load requirement. Or you could connect 111111 resistors in series and take the voltage off each one of them .. but ull have to put in consideration the load resistance ..
What will happen to frequency of current when voltage is changed using a step up or step down transformer?
Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.
What reduces voltage?
It depends on what you mean by 'voltage'. For example, if you mean electromotive force (e.m.f.), then the internal resistance of a battery or generator will cause an internal voltage drop, resulting in the terminal voltage being lower than the open-circuit voltage and the greater the load, the lower the open-circuit voltage. On the other hand, if you are asking 'how' do you reduce voltage, then there are various ways. For a.c. voltages, we can use a step-down transformer. For d.c. voltages, we can use a variable resistor connected as a potentiometer, or a pair of fixed-value resistors to form a voltage divider.
What best describes the result of using the fill handle on a cell containing a formula in Excel?
It is used to copy the formula down or across.
Can you amplify the AC in your data center using an AC transformer and how?
Yes, the AC current can be amplified by using Step-down transformers, but one problem is the AC voltage will decrease with Step-down transformer.
