design

Hello everyone! I spent months doing this spreadsheet, trying to make something that has its worth in the help of designing a BJT CE amplifier stage. Really simple, resistive base divider, resistor on the emitter to linearize, collector resistor for simplicity... But the transistor model is...

Hello everyone, I’m building my first microwave oscillator and I’m trying to enforce the reflection-coefficient condition—namely, that the product of the two reflection coefficients has a real part greater than 1 and a zero imaginary part. To achieve this, I generated a negative resistance...

Can someone help me with this? Solar-Powered Smart Street Lighting with Motion Detection 1. Determine the required solar panel size, solar charge controller (Maximum Power Point Tracking) / BMS (Battery Management System) and battery storage capacity to ensure continuous operation of 12 V, 37...

I am designing a simple, cheap, yet intended to be usably accurate free open source mosfet tester with some special features. it will be based on cheap common arduino compatible microcontrollers, where the intend is that it can easily be ported to many boards. as well as that support for many...

Hi All, Good Morning.I have an extension box which has five plug points. I suspect all five points supply same amount of electricity despite the devices only need a fraction of it. Am I right? For instance, my home is being supplied 240 volts but my mobile charger consumes the full 240 just to...

Hello everyone, I want to share my assignment with you. I definitely don't want you to solve it for me, as that would be taking the easy way out. I just have a few questions. Our assignment is to design a differential amplifier, and the conditions are given in the photo. However, we need to...

Hello, I've been looking into online scientific articles and I was able to find a few ones about the subject. On these articles it is normally observed that the torque value of the motors doubles or even quadruples with the direct contact of the rotor and the stator while consuming the same...

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...

Hello everyone, I would like to ask if anyone has used a desktop digital power meter? For example, the well-known Hioki and Yokogawa digital power meters. I am doing a design research, can you help me understand a few questions, thank you very much: 1. What is the most frequently used function...

I designed a circuit to process input from a sensor with a range of -300 mV to 300 mV. The desired output of the circuit is 0 V to 600 mV. To achieve this, I used the op-amp equation Vout = Vin + 0.3 as a basis for my design. However, when I simulated the circuit, the output was only around 900...

What are the advantages of using a flyback converter in the power supply systems? What are the complications that designer usually faces when flyback converter is used? How is GaN based flyback converters different? Regards, Srihari Rao M

I design a project using an 8051 microcontroller. A project description is mentioned below: I used two LEDs with the logic that if led1 is on continuously then led2 will be on for 1 sec and off for a long delay. This logic is running fine in proteus software but it is not working when the...

Hi, I have many active analog filters to design, mainly bandpass an lowpass. I am tired to write pages and pages of computations, try to find the best architecture, select between Butterworth Tchebytcheff, Cauer etc.. Would you know any intelligent program which would help me to choose the best...

Hey all, this is an oddity of a request. First, I'm not an electrical engineer; next, I wouldn't know a good circuit if it gave me a lap dance, so...I'm asking the community for help. I'm writing a blog and would like to include some circuit diagrams; it seems like they would be perfect for...

Hi everyone!, im currently a student, i know about electrical circuits, basic electronics, digital circuits, basic digital design, microcontrollers, programming and other things, im a biomedical engineer and currently im working as service engineer (giving maintenance to medical equipment) but...

I have an RF Explorer to use to scan what RF's are around me. I am curious as I'm am just getting in learning about wireless transmission and propagation. However I can't explain these power levels of -10 dbm all the way to -0. The RF Explorer does seem to be working correctly just based off of...

Hi guys, I am new here. FYI before I get started, I am not an engineer, designer, programmer, or anything of that nature. I’m just a dude who loves a challenge, and I love diy home projects. Now, I hope this is the right forum to ask this kind of question! So let me get started: I have lately...

I am wondering if it would be possible to swap out the MOSFETs on the picoUPS-100 by Mini-Box for higher-powered ICs. I know it would void the warranty, but it would be great to get a little more juice out of the device...

Hi everyone, I am relatively new to designing schematics and PCB's and have only ever done simple circuits up until now. I have tried my hand at designing my very first ESP32 based Dev board. I know that these can be bought for fairly cheap already, but wanted to have a go at actually designing...

Hello, I'm trying to design a folded cascode op amp as shown below. I need a high full power bandwidth, about 90 to 100MHz, and a high gain (>60dB). I reach the required gain but it's hard for me to have a large full power BDW, it doesn't exceed the 500KHz. From the theory, the frequency at...