electronics

Given a zener of 4.7V with a knee current of 1mA and a maximum power dissipation of 1W . Design a regulated power supply to deliver a load current ranging from 0 to 50 mA. Given an AC Supply of 230 Vrms , 50 Hz . Design an auxiliary Circuit which gives an output ranging from 8 to 8.4V i saw...

I am making an induction heater. mosfets irfz44n, c = 0.1uf, r1=r2=220ohm, l1=l2 (don’t know I made it by myself but it’s greater than the induction coil. I made it using 24awg wire, 30 turns around small transformers core), vsup is 12v, the induction coil I am using is 5 turns coil (around...

Hi everyone, I'm working on a servo motor control circuit using a 555 timer. I have the following circuit (attach the schematic if possible). When I remove the button connected to the 68k resistor, the servo moves to 180° but does not return to 0°. What I want to achieve: When I press the...

Hello everyone, I'm currently working on a Hybrid vehicle project called REEV (Range Extended Electric Vehicle) for a competition organized by SAE India. The VCU in our car is connected to critical components like the battery, motor, generator, and various sensors. I need to acquire data such...

I have tried 2 different transformations for this question (both wue to delta and T to pi) but still i get stuck at the very end and i have to go further after this point

Hi all, A friend and I are in the middle of designing a KVM switch for two computers to a single monitor using the HD3SS215 from Ti. https://www.ti.com/product/HD3SS215/part-details/HD3SS215RTQR We are confused as what to do with the Config 1 signal in displayport to HDMI converter...

So I am currently in my second year of college in a physics major. I took my electromagnetism course in my second semester and I got a liking to it. However, the course was completely on a theoretical physics level and in the circuits chapter I didn't perform the best. Sadly I also flunked the...

I need to know how the LED light of a USB card reader that indicates the data transfer works? Is it possible to create such a light using transistors and putting that circuit parallelly with a data cable connected to a USB storage drive? In this diagram how that LED connected with the GPIO0...

I am pulsing a 38mH coil (16 AWG wire wrapped around a small tube) with a IRFB4115pbf MOSFET at 66.6v (3 lipo 5200mAH "50C" battery's in series). It's a lot of juice! Using Lt spice I simulated this and found that the voltage spikes can reach up to 20kv. I am trying to figure out if I should use...

This is a system to detect any intruders using ultrasonic sensor . The buzzer should ring if the timer gets triggered . Somebody help me with the simulation using proteus or any other softwares

HI! I am new to electronics .planning to do fm bug for college project can someone explain this circuit in detail

Hi All, I have a small PCB circuit with a brushless motor being driven by a Arm Cortex STM32F302K8 microproccessor it also contains mosfets and microswitches. This PCB has a 4 pin header for an external programming card, but this programming card has not been released and it has been 2 years...

hey guys i,m new to this forum and Lt spice I am planning on building a FM bug using hardware, i am trying to simulate this circuit using LTspice In simulation i am replacing the microphone with a voltage source of 10mV and 2kHz then removing 68k resistor. simulation file is attched.Kindly...

I am designing a constant 5 volt output switching regulator that bucks 12 to 24 volts down to 5 volts while supporting 5 amps. It is used to boot up a Raspberry Pi with a 10 inch screen. At 12 volts, the Pi will boot up fine. At 24 volts, around halfway through the bootup, the regulator will...

So there are many electronic 'air' drumsticks in the market, such as Aeroband, Freedrum, Senstroke, Aerodrums, etc. I wanted to know what sensors do these use or might have used to do what they do. For example, the Aeroband Pocketdrum have a pair of drumsticks with sensors, and a pair of foot...

Good day , I hope this message finds you well , I am a first year student in electronics engineering , and wanted to ask some question about my project 1.What are some of the reason you choose to pursue this career ? 2.What struggles have you encountered at work and how did your math and...

Hey Everyone, My mother in-law who's deaf has a door bell which is wired up to the mains supply and a normal household bulb above her door in the main room of her house, when the door bell is pressed the light flashes. For the past few months this has been intermittently working and today i...

I have a linear power supply for an old video door phone system with 2 voltage outputs +15VDC , +18VDC and they share the same GND. The +15Vdc is not working because the power supply is faulty. Can i install a 15Vdc SMPS to work alongside this old power supply? The DC outputs feed the central...

Hi all, I'm quite new to electronics. I have a very basic understanding of DC circuits, but nothing too extreme, therefore I would like some help on how to create a dual-axis solar tracker using 2 LDRs, run off of a single DC motor, and 1 battery/power source (potentially looking into solar...

Hi, I am trying to read the RS485 Absolute encoder from EK-TM4C129. I am using the MAX485 module to convert RS485 to ttl, which is half duplex, where DE is Active high, and RE is active low. I have written the code to enable the Transmitter and receiver, where needed. we must transmit the data...