1. 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?
  2. Younes Thabet

    How to search for a part number in Altium Designer libraries?

    Hello, I have a schematic in a pdf format (generated by Altium Designer) which has the below capacitors labeled LEC692. My first guess was this must be the Part Number but I didn't find it in the "Miscellaneous devices" library!! And also looking into the internet didn't give anything!! Can...
  3. SoulSnatcher

    Dual capacitor wiring issues

    Ok so I have a twin tub mini washer and I need to replace the capacitor because the washing motor has stopped functuooning. This machine has a round dual capacitor for the spin dry motor (which is still functioning fine) & for the washing motor which runs on high or low speed. It has four wires...
  4. M

    SPICE model error with Subcircuit model nodes as "Text" Instead of Unsigned Integer in Mindi SIMPLIS

    Setup: MPLAB Mindi Simulator in SIMPLIS mode, *.mod model file of capacitor GRM31CC80G227ME11. I have loaded(via model library addition or directly including using .INC file) a Sub circuit model of Capacitor(GRM31CC80G227ME11) to Generic capacitor part in Mindi Simulator and using it circuit...
  5. K

    Clock edge detector using capacitor and resistor problem

    I have watched recently this video: At the end of it he describe a way to make edge detector by using capacitor and resistor. The thing is i don't see it being discharged in any way. Would't it make it impossible to charge again and in consequence make current flow through the resistor and make...
  6. F

    Starting Capacitor in non-motorized devices.

    Hi, I have a question to solve. Why should an starting capacitor only be used in single-phase motors and not in devices non-motorized, for example, a television? The starting capacitor protects the motor, I would like to know if the starting capacitor is equally useful in protecting devices such...
  7. E

    I need help with coil gun circuit

    Hello, I have been making circuits as a hobby for 2 years now mainly focusing on trying to make a coil gun, and tried and failed 7 times now, and I am in desperate need of help with the circuit, if you see anything wrong with my diagram please respond as soon as possible. I bought most of the...
  8. Avi08

    Is this capacitor failing

    This is the cap(the one on the left) on the power board of my monitor. 4700uf 25V. Since the monitor turns off in a few seconds everytime I power it up I tried to take a look. Since it is not egregiously bloating I was wondering when do caps like these stop working or is it already a goner?
  9. T

    how to get approximately 30V on Vout in this voltage source?

    hello everyone. i´m doing a voltage source and i want to get approximately 30V-500mA on Vout with the smallest ripple as possible. : i got a transformer 12 0 12 V and a 1000V 2A bridge rectifier and 4700uf 35V electrolytic capacitor. The thing is: after rectifying it it should give me 24 *...
  10. A

    Portable Washing Mashine Modification - Wiring Problem

    Howdy, It's my first post here, I've been trying to work the issue out myself, but where I'm at currently I've no functioning RDA protection on the mains breaker and I've no sacrificial fuse equipped power bar to plug my project into in case it causes a surge I'm trying to fix my grandma's old...
  11. NVZN1

    What capacitor for 12V 1A source

    So I have designed a relay that automatically switch to battery source input if blackout happens, to power my 12V wifi. But the relay has 1 second delay to switch to battery input. Many people suggest me to get a capacitor, to buy time waiting relay to switch. Question is : how much uf...
  12. S

    Problem selecting high voltage resonant capacitors for LCC Converter

    Hi, I have designed an LCC split-capacitor converter and while browsing the data sheet for my resonant capacitors, noticed how much the AC voltage of an MLCC C0G type derates with frequency. My converter is running 200-400kHz. Here is the data sheet: KEM_C1039_KC_LINK_C0G-1315560.pdf...
  13. E

    Questions about electronic components for guitar pedals

    Hi! I'm planning on making my own guitar pedal (boost) and have some questions. Is through-hole technology or SMD recommended? I see that most pedals are made with THT and not SMD, does anyone know why? One thought I had was that space isn't an issue in guitar pedals, generally speaking, since...
  14. Tentmaker

    Help me ID: Unidentified Components: Capacitor, resistor/fuse (with fridge fiasco story)

    TLDR: ID & ideals on mangled through-hole components, images below: Story: The Torontonian's Tale of the Fridge Fiasco Out with the old, in with the new! Or, so the non-electronics hobbyist will say when an appliance malfunctions. But, me? No, siree bob! Not with a soldering iron and all the...
  15. Marky G

    What SMD component is this?

    This is from an adblue ecu circuit for Citroen/ Peugeot cars. I need help identifying these components. Thanks for all your replies! The first one has 3 pins with the letters CG and a Y that's horizontal (on another board it shows CG with a U that's horizontal). The second one that's...
  16. SMPS Lover

    SMPS Transformer noise and Low output voltage

    Hello, i have an issue with a 12v30A PSU: low output of 4v instead of 12v, SMPS transformer noise like low frequency issue. No short element in the secondary, RT/CT of tl 494 within specs, but i suspect the capacitor at VCC of TL494 : it is only 10mF and has only 7.5V. The DC output voltage...
  17. taharat

    12V 2A power supply with 1M ohm resistor, 1uF 250V capacitor and 1N5408 diode

    Hello everyone. I have seen many videos on YouTube where they built a capacitor based 220V AC to 12V DC power supply. But those were not sufficient for my project. I am eager to build a 12V 2A power supply where the input will be 220V 50 Hz using the following components: 105K 250V ceramic...
  18. C

    Cube Capacitor Problem

    Got anxious about it and I don't know how to start solving this. Sorry for the bad drawing.
  19. tlemsalim

    Dielectric permittivity measurement of solid materials using capacitors

    Hi, I am currently doing some research work on different ways to measure permittivity of materials. In particular, I want to measure the permittivity of FR4 materials of PCB, and of an aluminium oxide block of approximately 0.5 cm^3, at 2.45 GHz. One idea I want to explore is how to measure...