1. L

    I don't understand inductors

    I'm reading Art of Electronics without background and in 1.5.1 there is an example I don't understand why. To be fair I don't understand anything at all. I treat current like a river and voltage like a difference in height between different parts of the river flow. As I understand inductor...
  2. iDux

    (Myth or something innovative?) Idea for inductors/electromagnets

    Hi, I wanted to share a little idea I had (which may have already been discussed), which would be: What if we take a pulsating DC current, modifying it into spiral loopies (Idk if this is possible), and applying this modified current to an Inductor, would that inductor´s efficiency be increased...
  3. G

    Inductor / Coil / PWM door lock understand issues.

    Hi, I have returned to an old issue I am struggling with – my door lock solenoid project again. I have created a really simple LTSpice circuit driving my solenoid at 1Khz, 50% duty. The solenoid I measured with an inductance meter, 35mH and 25R series resistance, this has been entered into the...
  4. D

    alternative Inductor for Evaluation boards kit DC2781A (using LT8316 )

    Hi, I want to build the DC2781A evaluation board by Analog Devices. Most of the passive parts I already have, so the building cost would be much cheaper for me. However, I wasn't able to find a distributor that sells the inductor of this schematic: RPT129NP-102MB by Sumida. Therefore, I'm...
  5. B

    Developed a power supply module, got the PCB connected to mains, Instant blew up of capacitor and inductor.

    Any idea what could be the issue or wrong with it?
  6. N

    Common SMD inductor values to try out in repairing

    Hello, I have the broken bluetooth module that you can see in the picture below. Noted in RED 1 and 2, are the two places where an SMD inductor should be. I salvaged one SMD inductor going there, which you can see in the picture below: However, I destroyed it while trying to connect leads...
  7. S

    Inductor identification

    Hey team. New to the forum. Just need help identifying the following inductor on an HP laptop. Any info on what I can replace this part with would be greatly appreciated. -Swift
  8. K

    Switching response of an inductor

    I am experimenting with an inductor to see what is happening when it gets saturated and at which current it happens. So I set up the attached test circuit and checked the current on the 1Ω resistor. I expected the current to ramp up until the inductor gets saturated and then to increase at even...
  9. ChrisWhite85

    Solar LED Troubleshooting and Learning

    Hi all, I have a Solar LED Light that is not working, and I want to use this to get back into electronics a little. I'm a Control Systems designer, but this level of electrical work still creates a lot of confusion for me. So I am hoping to use this as a learning project. The board is a...
  10. P

    Blown Inductors on a Dell Laptop Board

    Hello everyone, first thread here, I have cracked open a Dell XPS13 9350 that I've diagnosed the motherboard being dead. It's my mothers old laptop. I figured this would be a good chance to learn more about the micro parts on a board. Upon taking it apart, I found some blown inductors (atleast...
  11. E

    Chaos generator MOSFET, how does it work?

    The circuit in the picture is a chaotic generator formed from MOSFETs as opposed to op amps from the usual chaos generators. How does it all work exactly? Whilst I have knowledge of how MOSFETs work and such, the connections etc are hard to understand what they all do completely. In-depth...
  12. D

    Inductor current

    An inductor of 10H has 1omh internal resistance. What is the current through the inductor after 10V is applied for 1 second?
  13. Manish Shamjhu

    Homework help, Derive s11(p) and s12(p)

    Derive s11p and s12p
  14. P

    Finding the Size of Inductor and Capacitor

    Hi, i have calculated the L and C value for filter circuit for Three phase inverter, now i would like to know the size and weight of the filter circuit for the L and C value i have calculated. Can anyone help me on how to do this ? Thank you. Raj
  15. John Czerwinski

    DC Boost Converter (5v to 12v using LM2577) not powering load

    I'm sure I'm missing something very fundamental here, but I've built a boost circuit on a breadboard (see attached schematic) to convert 5v to 12v using an LM2577-adj. I want to power a 12v PC fan (rate at 12v at .06A) as the load. The LM2577 seems to work fine, as I'm measuring 12v. The fan...
  16. H

    finding the number of turns for my inductance.

    Hey guys, so i've calculated that I need an inductance of 0.150mH for my inductor. However, I'm trying to figure out the number of turns I need for it. # I've got an answer of 24 turns but this doesn't feel right to me. Could someone double check my calculations? below is the datasheet for the...
  17. J

    Trying to ID this "inductor"?.

    It is been used as a ballast for a 120v UV Ligtht. It has only two cables, one cable is connected to power source and the other to one of the 4 prongs of the UV bulb. the second prong of the bulb is connected to power negative cable, the remaining two prongs of the bulb are connected to the...
  18. P

    measure,Identify ferrite bead smd and inductor smd

    Hi guys, decided to ask. maybe someone came across this, but I did not find how to identify a damaged element. In general, I need an element identification. since many manufacturers of SMD components it is very difficult to identify them without special expensive equipment. The circuit...
  19. N

    Confused over an easy plot about inductor current

    Need some insight about a plot found in the Fundamentals of power electronics second edition book. I don't really understand why it is written like this. Left side \( \frac{I}{V_{g}/R} \) can be rewritten to \( \frac{1}{D'^{2}} \) so it is basically "just" duty cycle. The book states that the...
  20. kubeek

    Great tool for transformer calculation

    Hi guys, I just found a great website that lets you easily calculate the parameters of a transformer or inductor, given the core parameters and material. I was trying to choose some suitable core to make a flyback for geiger counter, and this really came handy instead of doing a bunch of...