Tagged Questions

6
votes
2answers
165 views

Inductor equivalent of capacitor's charge

Because inductors share similar equations in their charging/discharging cycles, I am wondering if inductors have something like charge. Capacitors have capacitance and charge while an inductor has ...
1
vote
1answer
170 views

Getting Right parts and building ZVS flyback correctly

I recently built a 555 timer flyback driver. I used 2 IRFP450 MOSFET's in parallel to drive it and I got pretty good arcs. Something always seemed to fail, and I always was buying another 555 chip or ...
1
vote
2answers
144 views

Laplace Relation to Capacitors and Inductors

Can anyone recommend a good resource to understand how a capacitor works as an integrator and an inductor works as differentiator? I'm looking for something to show me how the laplace transform comes ...
1
vote
2answers
163 views

Discharging RLC. Kirchhoff's second law

I have been trying to solve this homework problem for who-knows how many hours. I could break it down enough as to specify the problem I'm facing into a single question: For the following circuit ...
0
votes
2answers
110 views

What are the components needed for this receiver?

I want to build a simple crystal radio receiver. I do not want amplify the signal received. I want to detect the presence of a transmitted signal, and then use the presence of the received signal as a ...
-5
votes
1answer
311 views

About Resistor packages, inductor packages and capacitor packages

I want to know what is meant by Resistor, capacitor, and inductor packages. what are differnt catagories in them.
0
votes
1answer
112 views

calculating inductance formula

what is the formula for caculating inductance on the basis of 1)No of turns. 2)Diameter of the wire 3)Diameter of the wounded circle. ? how to calculate the capacitance value in ceramic capacitor ...
3
votes
2answers
96 views

2 loads not working together on the same battery

One 12v car battery powers 2 loads. One load is 3.5A and the other is 100mA. The 100mA load is always on. When the 3.5A load gets switched on, scope readings show the amp draw momentarily dropping to ...
0
votes
0answers
226 views

How do you directly determine the approx. value of internal resistance of inductor in LC circuit

According to my calculation, it will take 0.005 seconds to charge this circuit to 8 Volts through the 50 ohms resistor. Using $$ V_c = V_s(1-e^{-t/RC}) $$ How do you determine the effective ...
3
votes
3answers
927 views

Behavior of RLC circuit elements at t = 0

I'm wondering what are the behaviors of the inductor, L, and capacitor, C, at t = 0+ Please correct my understanding of the above circuit if I am wrong. At t = 0, the capacitor acts like a wire. ...
2
votes
1answer
109 views

Deciphering Part Names in BOM

I need help deciphering a BOM that comes with a particular TI reference design. If you look at "Partlist.rep" in the zip file, it looks something like this [I've edited it down a bit]: ...
3
votes
6answers
675 views

how a phase delay occurs in capacitors/inductors with visual images

Capacitors provide a phase delay between the current and voltage. Current leads the voltage by 90 degree. I was taught these only with the equations. But I want visual intuition, what happens in the ...
10
votes
4answers
809 views

Can you store energy in an inductor and use it later?

My company uses supercaps to power the device if power is cut. I was wondering if you could do the same thing with an inductor. If you can't, why not?
1
vote
3answers
437 views

How to implement and tune a LC band-stop filter?

I have designed a simple LC band stop filter with a center frequency of 433MHz. The schematic looks like: The caps are NP0 0603 and the inductors are from the Coilcraft 0603HP series. The values ...
2
votes
1answer
261 views

Are capacitors and inductors capable of absorbing positive power?

A resistor is capable of absorbing positive power. Why wouldn't this be true for capacitors and inductors?
1
vote
1answer
163 views

Why sine wave UPS triggering surge protector again and again

I recently open up brother's APC sine wave UPS to fix and trying to repair some damage that usually happen over time due to age by replacing components I suspect one by one. When I start doing AC ...
0
votes
1answer
115 views

Norator in series with inductor/capacitor [closed]

I know that if I have a norator in series with a resistor, I can replace the resistor with a short circuit. My question is, if I can do the same with a linear inductor/capacitor?
1
vote
7answers
367 views

What do you call it when you add energy to an inductor?

When you add energy to a capacitor, you say that you are "charging it". This is kind of a misnomer, since the total amount of charge in the capacitor is the same, but whatever. (Actually, using ...
5
votes
2answers
3k views

Capacitors or Inductors?

So I know what they both do......but yet I don't know when you'd choose to use one over the other? There was a similar question on here, but the answer didn't really make sense to me (who is an ...
2
votes
4answers
344 views

Understanding when to use basic Components

So I understand AVR assembly for the most part, and generally understand the overview of microcontrollers. but when it comes to specific components (besides the obvious stuff like resistors/batterys) ...
9
votes
7answers
4k views

Inductor vs a capacitor

Hi am a Trainee electrician and pc hardware enthusiast. I was just wondering why a mixture of inductors and capacitors are used on motherboards? Why not just use capacitor? I thought the inductor ...
2
votes
3answers
1k views

Plans / tutorial for sound effect generator using only analog components?

I've been wanting to make a laser gun sound effect attachment for my son's bike. Currently, I'm using the electronics salvaged from his old laser gun toys. All of them seem to use electronics hidden ...
3
votes
2answers
388 views

LC circuit: can it act as an “AC battery”?

I am curious about a resonant LC circuit. Assuming a perfect inductor and capacitor, would it be possible to tap off the energy in the oscillations to use it as a battery? Literally, it would be an AC ...
1
vote
4answers
3k views

What are the behaviors of capacitors and inductors at time t=0?

Do capacitors act as an open circuits or closed circuits at time t=0? Why? What about inductors? I tried it out, and what I got was this: Initially when I opened the switch, the capacitor acted like ...