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Can you please explain what RMS value is?
RMS stands for Root Mean Square. It is a method of averaging where you take the squares of a bunch of samples, average them with an ordinary mean, and then take the square root. This gives greater weight to larger values. In the case of an ordinary sine wave, the RMS value is 0.707 times the peak value, 0.707 being 1/2 the square root of 2, and the peak value being one half the peak-to-peak value. For example, in the US, a "standard" 117VAC line voltage is actually an RMS voltage that corresponds to a peak voltage of 166VAC.RMS is a necessary unit because, often, the waveform is not sinusoidal, it is sawtooth, such as in a power supply. Using an ordinary VOM, calibrated for a sinusoidal AC scale in such a case, will give an inaccurate reading of ripple voltage. Most modern DMM's have a true-RMS mode which will work correctly by using sampling and analysis technology.RMS is also a necessary unit because RMS is a better indication of how much power a signal can impart to a load.Another answerRMS stands for Root Mean Square value.In electrical technology, where alternating current (AC) is used, RMS Voltage and RMS Current (Amps) must be used to calculate the average power supplied or consumed. See the link below on how to find the RMS.In fluid flow technology related to gases, velocity is calculated as an RMS value because it can be used to find the average velocity of an ideal gas.Yet Another AnswerBecause a AC current is continuously varying in both magnitude and direction, it's necessary to measure it in a meaningful way. The rms-value of an AC current is equivalent to the value of DC current necessary to do exactly the same amount of work. For example, a sinusoidal AC current which peaks at 100 A has an rms-value of 70.7 A, and does exactly the same amount of work as a DC current of 70.7 A.
What replaces a EM48-23B-N transformer?
I suppose it depends on what you are repairing, I just replaced this exact transformer in a vintage Mr. Christmas Carousel Calliope. It is a 6v center tap transformer, I replaced mine with the one below which can be found on Amazon and is a 1amp. My carousel works good as new. I hope this helps someone. Center-Tapped-Transformer-117VAC-12VAC/dp/B00SOY36M8
How should you make an electric circuit for two bulbs and three fans to run from the main electricity supply?
If the bulbs and fans are designed to run on different voltages, then we'd have to know what the rated operating voltage of each item is, and then arrange them cleverly. If all of the bulbs and fans are 117VAC units ... each one could be individually plugged into a household outlet ... then combining them is easy: -- Connect one end of each bulb, one end of each fan, and one side of the electric cord all together. Cover the blob of six wires with insulating electrical tape. -- Connect the second end of each bulb, the second end of each fan, and the second side of the electric cord all together. Cover this second blob of six wires with insulating tape. -- Plug the electric cord into a standard household outlet. Each bulb and fan should operate normally.
Can you plug in a 120v15a light lamp into a 120v20a receptacle?
YES, and the actual power is 117VAC not 120.
Convert ac voltage rms to dc voltage?
The dc voltage of a rectified ac voltage will be the peak value of the ac voltage less the forward voltage drop of the diode.The rms voltage of a sinusoidal ac voltage is sqrt(peak) / 2, but you also have to consider if the ac voltage is balanced around zero.For a normal US house voltage of 117VAC, the peak voltage is about 165V, or 330V peak to peak. Your dc voltage is then around 164V.Run that rectified voltage through a capacitor, and you will still have 164V peak value, but the voltage over time will dip because the capacitor will discharge during diode off time, and recharge when it turns back on.AnswerA given value of a.c. rms voltage is exactly equivalent to the corresponding value of d.c. voltage. For example, 120 V (rms) is exactly equivalent to 120 V d.c. This is why the alternative name for 'rms voltage' is 'effective voltage'. This is based on the fact that a current of, say, 10 A (rms) will do exactly the same amount of work as a d.c. current of 10 A. And, of course, voltage and current are proportional.
Can you please explain what RMS value is?
RMS stands for Root Mean Square. It is a method of averaging where you take the squares of a bunch of samples, average them with an ordinary mean, and then take the square root. This gives greater weight to larger values. In the case of an ordinary sine wave, the RMS value is 0.707 times the peak value, 0.707 being 1/2 the square root of 2, and the peak value being one half the peak-to-peak value. For example, in the US, a "standard" 117VAC line voltage is actually an RMS voltage that corresponds to a peak voltage of 166VAC.RMS is a necessary unit because, often, the waveform is not sinusoidal, it is sawtooth, such as in a power supply. Using an ordinary VOM, calibrated for a sinusoidal AC scale in such a case, will give an inaccurate reading of ripple voltage. Most modern DMM's have a true-RMS mode which will work correctly by using sampling and analysis technology.RMS is also a necessary unit because RMS is a better indication of how much power a signal can impart to a load.Another answerRMS stands for Root Mean Square value.In electrical technology, where alternating current (AC) is used, RMS Voltage and RMS Current (Amps) must be used to calculate the average power supplied or consumed. See the link below on how to find the RMS.In fluid flow technology related to gases, velocity is calculated as an RMS value because it can be used to find the average velocity of an ideal gas.Yet Another AnswerBecause a AC current is continuously varying in both magnitude and direction, it's necessary to measure it in a meaningful way. The rms-value of an AC current is equivalent to the value of DC current necessary to do exactly the same amount of work. For example, a sinusoidal AC current which peaks at 100 A has an rms-value of 70.7 A, and does exactly the same amount of work as a DC current of 70.7 A.
What replaces a EM48-23B-N transformer?
I suppose it depends on what you are repairing, I just replaced this exact transformer in a vintage Mr. Christmas Carousel Calliope. It is a 6v center tap transformer, I replaced mine with the one below which can be found on Amazon and is a 1amp. My carousel works good as new. I hope this helps someone. Center-Tapped-Transformer-117VAC-12VAC/dp/B00SOY36M8
How should you make an electric circuit for two bulbs and three fans to run from the main electricity supply?
If the bulbs and fans are designed to run on different voltages, then we'd have to know what the rated operating voltage of each item is, and then arrange them cleverly. If all of the bulbs and fans are 117VAC units ... each one could be individually plugged into a household outlet ... then combining them is easy: -- Connect one end of each bulb, one end of each fan, and one side of the electric cord all together. Cover the blob of six wires with insulating electrical tape. -- Connect the second end of each bulb, the second end of each fan, and the second side of the electric cord all together. Cover this second blob of six wires with insulating tape. -- Plug the electric cord into a standard household outlet. Each bulb and fan should operate normally.
How many volts of electricy can kill a person?
A simple experiment to show voltage as ultimately harmless is to track across carpet then touch metal. The shock that you receive from this can easily exceed 12,000 Volts, and can be in the high 20's. There is no real current to this shock though, and the duration of exposure is also negligible. Current is the amount of charge that passes through a plane, where as voltage represents the difference of potential energy between source and its ground (you in this case would be the path to ground). Current is roughly equivalent to Voltage divided by resistance. Meaning the higher resistance is, the lower the current which is harmful product. Your house (in the United States) provides 110-117VAC at 60 Hz to all of your outlets. What you need to look at here is the 60 Hz. Because 60 Hz so closely matches the pace of the heart, this frequency is HIGHLY dangerous, as when the current passes your heart it can cause fibrilation. Now, if you have ever done any household electric work, you have likely touched a hot wire before and been fine. Most outlets and sources still do not have a ton of current through them. Also, the sudden shock causes you to jolt back minimizing the duration and protecting the heart. Were you to grab and hold on to these wires, you would likely die from it. In avionics, I know that 400 Hz frequency is generally used, and this is far safer to work with, as it is far less likely to cause fibrilation. Higher current sources though will still cook a person in a matter of seconds. With all of this in mind, your question asks what is the lowest amount of volts that can kill you. Because resistance of each persons body is different, the amount of current produced from a voltage source will differ depending on who is touching it, and how they are exposed to it. Were a small child to latch on to an active AC source with even 30-40 Volts, it could be deadly (fibrilation can still occur at lower voltages and cause death). For DC, the voltage would be approximately the same, but the primary path of the current would have to be through the body to be dangerous at all. For an adult, you would be looking at 40-50 Volts.
What do you need to know to calculate how much energy a light bulb uses?
Okay so I searched for 3 hours on Google and no answer so here it is: 40W - 110C; 60W 140C; 100W 136C; and 100W Flood (Red Green Yellow) 125C. Standard bulb, 117VAC, 60Hz, facing up (edison Base down, free air, 22C ambient, measured with K-type thermocouple, calibrated in last 12 months....
How does a three stage compressor work?
There are several kinds of compressors--reciprocating, screw, centrifugal. We'll use a reciprocating compressor in this example. It's got a piston moving back and forth in a cylinder to compress the air. (It's like a car engine, and you can get a kit to turn an old Volkswagen engine into a compressor.) This assembly is called a stage. The cheapest compressors are single-stage units--they have one piston and cylinder. The air from the atmosphere is sucked into the assembly, compressed then sent to the tank. Next come two-stage compressors, which have a low-pressure stage and a high-pressure stage. The air from the first stage is compressed again by the second stage, which gives more pressure with less stress on the unit. It's easier on the compressor to take air from 2 atmospheres to 4 than it is to go from 1 atmosphere to 4. A three-stage compressor takes this doubly compressed air and compresses it again, and a four-stage compressor has a fourth compression step. Most of the people who buy three-stage compressors fill diving tanks with them--you need to be able to make 5000 psi to fill a diving tank, and three-stage compressors are good for that.
