integrated circuit

  1. Qasimhmdn

    Help with trouble shooting sit stand desk control box PCB

    Hello guys, so i have an electric sit stand desk and it stopped working a while ago, i opened up the control box model TC15L from TI motion, and saw the IC in the pictures was fried so much so that it was impossible to read the part number off of the IC. Upon touching this IC, it blew away like...
  2. Theodk

    Etna Microwave/Oven automatically resets after 3 seconds of operation

    Hi all, I really hope you guys can help resolve this mystery. Thanks in advance for your consideration. Recently, my microwave/oven combination (Etna CM751ZT/E01) stopped working. As the display wouldn't even turn on, I opened it up to check for any faulty fuses or thermal cutoffs. I did...
  3. E

    Identification of an Uninterrupted Power Supply's Integrated Circuit.

    Hello everyone, I de-soldered a 24-pin IC from an old Uninterrupted Power Supply's board. However, I haven't been able to find a datasheet or even information about the manufacturer on the almighty internet so far. Here's what I've been able to find out from looking at it closely: What I...
  4. S

    LED Dimmer IC Recommendation?

    Hey everyone, I'm working on making a custom headlamp for myself and want to have dimming functionality without using a microcontroller. I came across the IC FM2819 (data sheet attached) which has the characteristics I'm looking for, but it isn't available for purchase on DigiKey, Mouser, or the...
  5. Rahulk70

    Can a regular multimeter measure voltages in 400hz range?

    Hi, I’m building a test bench for some aircraft instruments and I was testing a Bendix 1964771-3 inverter(24 VDC) brought from eBay. The inverter should have outputs of 129VAC @ 370Hz @ 12VAC/18VAC @ 1110 Hz. The inverter was marked as untested but removed working from an aircraft I was told...
  6. S

    Hardware Interlock Circuit with AND & NOT Gates

    Here is my Hardware Interlock Circuit for Gate Signals which prevents both PWM Signals to be at same state at any given time. Here I want to reduce this two AND Gate IC's into a Single AND Gate IC. Or Is there any other way to implement the Hardware Interlock for Gate Signals ? Is there any...
  7. PhysicsSolvesAll

    What are the ways to test a switching IC like TOP266EG with a multimeter?

    What are the ways to test a switching IC TOP266EG with a multimeter? I want to check it if it is damaged or not. Link to the datasheet: Here is the DATASHEET picture: Here is the appearence of IC:
  8. S

    Engine control IC simulation

    Hi, I want to simulate the product in the link in a spice program, but there is no spice file provided by the manufacturer. How can I simulate the functions of this product in a program like LTspice? - Product : - Datasheet ...
  9. venkata.leoenterprises

    Identify the IC

    Thanks before hand, Please identify the make and type of IC. This is from a backplane board. regards venkat
  10. flaviotmz5

    Gate driver for two switch forward converter

    I'm trying to understand how to drive the MOSFET's in the two-switch forward, I designed a 200W DC-DC converter, 50V input 100V output but I was looking for using an MCU and IC in this case I have an IR2110 high side low side for the gate drive, I don't know if it is possible to use it? and if...
  11. MrsssSu

    20V max DC motor, how do hairdryer work on cool air without heating filament ?

    Hi readers, Hairdryers (240V AC) actually works on a design which current passes through the heating filament (Maybe consume 220V) to produce a lot of heat whereas through the DC motor (Maybe consume 20V). I have always been curious about this Question: Hair dryer has an option of choosing the...
  12. L

    LM317 no reference voltage

    Hello all, This is my first post so forgive me if I break any rules, I am trying to create a variable voltage power supply using an lm317 but am running into problems. For starters, it doesn't seem that I have a vref voltage, when probed I get 0 volts across input and adjust. My second problem...
  13. 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...
  14. L

    How to wire up PWM control chip to DC DC boost circuit

    Hello, I need some help connecting an 8 pin current mode PWM controller to my boost converter circuit. Specifically this one. I have used controller IC's with integrated switches to make boost converters before, however, the amount of power I need to run through the circuit requires an external...
  15. dignificent

    Texas Instruments BQ24640RVAT

    Received feedback that these parts are mysteriously over-heating when sent certain commands. When switched out with comparable parts in stock> No over-heating occured . Curious if this is impacting other users of this part or not. Is it a sign that this part could be counterfeit? Is there a bad...
  16. Alex_Khan

    Designing differential Signal modulator.

    Hello, I would like your suggestion on my first design Differential signal modulator [simulation attached]. Before jumping into design let me highlight my objective. I am differentiating a control signal of 1MHz and then modulating it with carrier frequency 15MHz(not limited to this specific...
  17. Alex_Khan

    Opto-isolator/ optocoupler for electric isolation in IC design.

    Hello everyone. I came across while reading the opto-isolator technique used for electric isolation in embedded systems/ Integrated Circuits design that " Opto-isolator is not recommended for electric isolation in power applications IC's mainly due to its dV/dt sensitivity". So I would like to...
  18. Errorbot1122

    How do you identify ICs and other components on a circuits board

    So i'm currently trying to take parts out of a Bluetooth speaker's circuit-board and find the Bluetooth module for a DIY project. I looked at the board and some ICs and tried looking them up to no avail. So How Do you read an IC or any other components on the board Or even find a schismatic...
  19. Alex_Khan

    Galvanic isolation in IC.

    Hello, I would need you guidance 'how galvanic isolation can be achieved in IC technology ? ' Thanks.
  20. Alex_Khan

    Modulating frequency of Multi-vibrator circuit (CMOS technology)

    Hello, I am modulating control signal with Multivibrator circuit in CMOS technology. I use this formula (1/2.2RC) to find the frequency of modulated signal with multivibrator. But my simulation (result) and theoritical (calculation) of frequency is not matching. I am using CADENCE software tool...