Low Frequency Electronic Transformer
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- Q: Hi, can somebody please help me with this inductor problem? I'm stuck on it and need some help i think that I have the general idea, but need some guidance.The CKT:
- EL di/dt or i(1/L) integral(E dt). For your circuit you know di/dt since you know E and L. Therefore you can find i. Note that i may have an initial condition.
- Q: How does inductor respond to DC?How does inductor respond to AC?
- It limits the current when the DC is first turned on. Once the circuit has stabilized, it has no effect. To AC it presents an impedance equal to XL 2πfL .
- Q: a dc voltage source is connected to an inductor through a switch and then the switch is closed . at t 0 the inductor will behave as an open circuit . no current will flow and all the source voltage will be across the inductor. why is that? why the inductor has such behaviour. why no current can pass through the inductor at t0.
- At t0, switch closed and a potential came across the inductor. So it is like a Alternating current for a Moment. That alternating current makes inductor to behave like in AC circuit. That affects reduce continuously after t+ time because of dc voltage. There will a opposing electromagnetic field in the inductor due to sudden voltage. that will stop current to flow through the inductor
- Q: All the current from the wire before it will go through the inductor because there is no resistance, right?
- If you're working with DC, and inductor is a short circuit. If you're working with AC, the inductor has an impedance and is not a short. The higher the frequency the higher the equivalent impedance. Z jwL (where w 2*pi*f)
- Q: Hello everyone, Anyone knows how to findout the rating of 3R3 inductor which is broken and needed to be replaced for a tablet xtouch X906? Please help.Thank youBernard
- 3R3 is typically a 3.3 mH but could be a 3.3 uH depending on the case size. Most are surface mount and if you can match it pictorially on digikey, you might have a chance in getting the same part. It is always best to have the manufacturer replace the part as they can test other areas that may be broken and need repair. Also you can do more damage if the proper part is not installed properly or if you overheat sensitive parts.
- Q: capaitor and inductor
- a Capacitor is an energy storage device but not like a battery, it only stores energy in a short duration of time. * an inductor also stores electrical charge in the form of magnetic feild and it also collapses in a short period of time.
- Q: I think I understand this more now after looking at my notes a little more. I need to turn them into polar form to make the division easier. Then I can put it back into the original form after.
- The magnitude of the circuit impedance is equal to the inductive reactance provided by the inductance: L X ωL, but ω 200 rad/s so that X 200(0.25) 50 ohm while V 100 volts the phasor current for the circuit: I V/Z where V is the voltage phasor V 100 angle 0? and the complex impedance: Z jX j50 Therefore: I 100/(jX) -j2 2 angle -90? The phasor current lags the phasor voltage by 90?.
- Q: and what do you think its should resistance be
- Anything that conducts electricity will be an inductor if it is exposed to a changing magnetic field. Some inductors are designed and built specifically for heating applications so having high resistance is a good thing. If induction is used in a transformer, then, to minimize electrical losses, want low resistance. So the answer is it depends.
- Q: If the current through an inductor were doubled, the energy stored in the inductor would be:halved.quartered.the same.quadrupled.doubled.
- Energy in an inductor is proportional to I^2. So when the current is doubled, the stored energy goes up by a factor of 4 (2I)^2 4 * I^2. So the answer is quadrupled.
- Q: How do you do this problem?Using the expression relating the rate at which current changes in an inductor to the voltage produced at it, find the voltage across the inductor when a switch supplying 6.8 A to a 6.5 mH inductor is suddenly opened. Assume that current drops linearly to zero in 3.4 milliseconds.
- The voltage across an inductor is given by: v L di/dt You're told that the current drops linearly to zero (from 6.8A) in 3.4ms. So you can write the current as: i 6.8 - 2000t The slope (-2000) can be found fairly easily, it's just 6.8A divided by 0.0034 seconds, you can check to see that the formula works properly (i.e. the current at t0 is 6.8A, and at t3.4ms is 0). So now, just take the derivative of 'i' with respect to 't', and plug it into the formula for the voltage across an inductor and you have your answer. You should get a voltage of -13V.
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| Location | Shenzhen, Guangdong, China (Mainland) |
| Year Established | 2006 |
| Annual Output Value | US$2.5 Million - US$5 Million |
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| Company Certifications | CE Certificates |
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| Nearest Port | Shekou,Yantian |
| Export Percentage | 51% - 60% |
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| Language Spoken: | English, Chinese |
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| Factory Size: | 3,000-5,000 square meters |
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| Contract Manufacturing | OEM Service Offered Design Service Offered Buyer Label Offered |
| Product Price Range | Average |
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Low Frequency Electronic Transformer
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 800 Pieces pc
- Supply Capability:
- 10000 Pieces per Month pc/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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